Beyond HIV: An Honest Guide to STIs and Screening for Women

There is a quiet truth most of us were never taught in school: most sexually transmitted infections do not announce themselves.

No itching. No pain. No discharge. Often, no symptoms at all — for months, sometimes years.

Which means many women only find out about an infection long after it has been quietly affecting their fertility, their cervix, or their pelvic health. Not because they did anything wrong. Because nobody told them what to ask for at the clinic.

This is the conversation you deserved to have a long time ago.

STIs are common, and that is not a moral statement

The World Health Organization estimates that more than one million sexually transmitted infections are acquired around the world every single day. Most of them are caused by just a handful of pathogens: chlamydia, gonorrhoea, syphilis, trichomoniasis, herpes simplex virus, and human papillomavirus (HPV).

Common does not mean inevitable, and it certainly does not mean shameful. It means an STI is closer in nature to a sinus infection than to a verdict. It is something a body can pick up, something a clinician can identify, and something — in the vast majority of cases — that can be treated, managed, or vaccinated against.

Holding that frame matters. Shame keeps women out of clinics. Information brings them back in.

The four big ones to know about

You do not need to memorise a textbook. But there are a handful of infections worth understanding in plain language, because they affect women's bodies in specific ways.

Chlamydia. Caused by Chlamydia trachomatis, this is one of the most commonly diagnosed STIs in women under 25. Up to 70% of women with chlamydia have no symptoms at all. Left untreated, it can travel from the cervix into the upper reproductive tract and cause pelvic inflammatory disease (PID), which is a leading preventable cause of infertility and chronic pelvic pain. The good news: a single course of antibiotics usually clears it.

Gonorrhoea. Often found alongside chlamydia, and similarly quiet in women. It can also cause PID and is increasingly resistant to older antibiotics, which is why current regimens use updated combinations recommended by the WHO and South African Department of Health.

Syphilis. Cases of syphilis have been rising globally over the past decade, including in South Africa. Untreated syphilis progresses through stages and, in pregnancy, can be passed to the baby with serious consequences. This is why every pregnant woman in the public health system is offered syphilis screening at her first antenatal visit. Treatment, when caught early, is straightforward: penicillin.

Human papillomavirus (HPV). This is the most common sexually transmitted infection in the world — the vast majority of sexually active people will encounter it at some point. Most strains clear on their own. A handful of high-risk strains can, over years, cause cervical cancer. This is what your pap smear is looking for. HPV vaccination, now offered free of charge to grade 5 girls in South African public schools, prevents the strains responsible for around 70% of cervical cancer cases.

Two more worth a mention:

• Trichomoniasis — a common parasitic infection that can cause itching, frothy discharge, or no symptoms at all. Treated with a short course of antibiotics.
• Genital herpes (HSV) — extremely common, often mild, sometimes asymptomatic. Not curable, but very manageable with antiviral medication and honest conversation.

Symptoms are unreliable. Screening is the answer.

If we are being honest about how women's bodies tend to present STIs, the headline is this: you cannot feel your way to a diagnosis. Most infections are silent in women, and many of the symptoms that do appear — unusual discharge, mild burning, a different smell, light spotting after sex — are easy to mistake for thrush, a UTI, or "just hormones."

This is exactly why screening matters more than symptom-spotting. A reasonable rhythm for most sexually active women looks like:

• Annual screening for chlamydia and gonorrhoea (more often if you have new partners or condomless sex).
• HIV testing at least once a year, with the pace adjusted to your circumstances and partner conversations.
• Syphilis testing at any new sexual health visit, and routinely in pregnancy.
• Cervical screening (pap smear or HPV test) every 3-5 years from your mid-20s, depending on national guidelines and your individual history. South African public sector guidelines currently offer pap smears every 10 years from age 30, but many private providers and women's health clinics recommend a more frequent schedule.

If something has changed — a new partner, a condom that broke, a partner's diagnosis, a symptom that is bothering you — that is reason enough to test outside the schedule. You do not have to justify a screening visit. "I'd like a full sexual health check" is a complete sentence.

What a screening visit actually looks like

For many women, the unknown is part of what holds them back. So here is what to expect, demystified.

A standard screening visit might involve:

• A short conversation about your sexual history, partners, contraception, and any symptoms. You can share as much or as little as feels useful — this is information for your care, not a moral inventory.
• A urine sample (the most common test for chlamydia and gonorrhoea).
• A small blood draw (for HIV, syphilis, and sometimes hepatitis B).
• A vaginal swab — sometimes self-collected behind a curtain — if there are symptoms or if you prefer it over a urine test.
• A pelvic exam and pap smear if it is time for one, or if symptoms suggest it is needed.

You can ask for a female clinician. You can bring a friend. You can wear comfortable clothes. You can ask the nurse to walk you through every step before it happens. None of this is unreasonable, and none of it makes you a difficult patient.

Most results come back within a few days. Many clinics will only call you if something is positive; others will call either way. Ask in advance which they do, so you are not waiting by the phone unnecessarily.

If a result comes back positive

Take a breath. Then take another.

A positive STI result is health information, not a character report. The most common emotional response — alongside surprise — is a need to know who, when, and how. Sometimes those questions have answers. Often they do not. Many STIs can sit silently for months or years, which means an old infection can surface in a new conversation. Pinpointing a source is rarely possible and almost never the most useful thing to focus on first.

What is useful:

• Start treatment. Most bacterial STIs (chlamydia, gonorrhoea, syphilis, trichomoniasis) are cured with antibiotics. Viral infections (HPV, herpes, HIV) are managed with vaccines, antivirals, or ongoing care.
• Tell recent partners. This is not about blame; it is about giving them the same chance to be tested and treated. Many clinics in South Africa offer partner notification support — sometimes anonymously — if you would prefer not to have the conversation alone.
• Avoid sex until treatment is complete, and follow your clinician's guidance on when to retest.
• Be gentle with yourself. A diagnosis is a moment, not an identity.

Pregnancy, fertility, and STIs

Untreated STIs are one of the most preventable causes of fertility difficulty in women. Chlamydia and gonorrhoea, in particular, can cause scarring in the fallopian tubes that interferes with conception or increases the risk of ectopic pregnancy. This is one of the strongest, most under-discussed reasons for routine screening — especially in your twenties, when infections are most common and least likely to cause symptoms.

If you are planning a pregnancy, a full STI screen — including HIV, syphilis, hepatitis B, and a pap smear if you are due — is one of the kindest things you can do for your future self and your future child. South African antenatal care includes most of these as standard, but doing them before conception means anything that needs treating can be treated calmly, without the urgency of a positive pregnancy test.

What changes the picture for women specifically

A few things are worth naming honestly.

Hormonal shifts change vaginal health. Pregnancy, perimenopause, and the menopausal transition all change the vaginal environment in ways that can make infections easier to acquire and harder to detect. Symptoms that used to feel obvious may become subtle. Screening rhythms may need to adjust as life stages do.

Power matters. In many relationships and many contexts, women do not have unilateral control over condom use, partner testing, or the timing of sex. This is not a personal failure. It is a structural reality, and it is one of the reasons the WHO emphasises tools women can control — including female condoms, HPV vaccination, regular screening, and PrEP for HIV prevention — alongside conversations about partner testing.

Stigma still hurts care. Women who have ever been told their pain or their concerns were "probably nothing" know exactly how this lands at a clinic counter. You are allowed to push, to ask for the test by name, to seek a second opinion, and to choose a provider who treats your sexual health as a normal part of your healthcare.

The bottom line

STIs are common, treatable, and quieter in women than most people realise. The single biggest predictor of whether one becomes a small detour or a long-term problem is how soon it is found.

You deserve a sexual health check that feels routine — not reserved for moments of crisis. You deserve a clinician who will run the right panel without making you ask three times. You deserve information that is older than your first relationship.

Knowing what is happening inside your body is not paranoia. It is one of the most ordinary, powerful forms of self-care available to you.

At Olanna Health, we believe sexual health is a normal part of whole health — and that women, fully informed, are unstoppable.