Reviewed & updated August 23, 2026

Can an STD Cause Stomach Pain or Cramps?

Quick answer

Yes — lower abdominal pain and cramps can signal serious STDs. In women, pelvic pain is the hallmark of pelvic inflammatory disease (PID), the emergency complication of untreated chlamydia or gonorrhea. Men may feel deep groin or perineal ache from epididymitis or prostatitis. New pelvic pain plus any infection risk deserves same-week testing; severe pain needs same-day care.

The big one: PID in women

When chlamydia or gonorrhea climbs from the cervix into the uterus, tubes and ovaries, it becomes pelvic inflammatory disease — affecting roughly 10–15% of untreated cervical infections, per CDC estimates. Pain ranges from dull low-belly aches to severe cramping, typically worse during sex or periods.

1 in 8women with PID history experience difficulty conceiving

10–15%of untreated chlamydia/gonorrhea progress to PID

~4.4%of sexually active US women of reproductive age have had PID (NHANES)

Pain with fever, vomiting or rapid worsening means same-day evaluation — IV antibiotics prevent the scarring that causes ectopic pregnancy risk and chronic pain. Our full explainer: is PID an STD?

Belly and groin pain in men

Epididymitis: chlamydia or gonorrhea inflaming the coiled tube behind a testicle — heaviness, swelling, tenderness on one side. Details in epididymitis causes.
Prostatitis: deep perineal ache, painful ejaculation, urinary frequency.
LGV: the invasive chlamydia strain causes dramatic rectal pain with receptive anal exposure.
Sudden severe testicular pain: think torsion first — an ER matter within hours, not an STI question.

When STIs upset the gut itself

Rectal chlamydia and gonorrhea produce cramping, tenesmus (feeling of incomplete evacuation) and diarrhea-like complaints after receptive anal sex. Rarely, disseminated gonococcal infection seeds joints and abdominal lining. Diarrhea-dominant patterns are unpacked further in our dedicated guide to STDs and digestive symptoms.

The unifying rule: pain below the navel plus any sexual risk factor = test now, don't wait for it to worsen. Start at where to get tested.

Frequently asked questions

Can an STD cause stomach pain?

Yes — particularly in women, where ascending chlamydia or gonorrhea causes pelvic inflammatory disease with persistent low-abdominal pain.

What does PID pain feel like?

Typically bilateral low-belly ache or cramping, often worse with sex, movement or menstruation; fever and discharge frequently accompany moderate-to-severe cases.

Can gonorrhea cause abdominal cramps?

Yes — through PID in women or rectal infection in anyone practicing receptive anal sex. Disseminated gonorrhea can also inflame abdominal joints and lining.

Where does STI belly pain sit?

Usually central lower abdomen or pelvic region, above the pubic bone — distinct from gas pains (variable) or appendix pain (right lower quadrant, migrating).

Sources & further reading

📚 CDC — Pelvic inflammatory disease guidelines — www.cdc.gov/std/treatment-guidelines/pid.htm
📚 CDC — PID fact sheet — www.cdc.gov/pelvic-inflammatory-disease/about
📚 CDC — Epididymitis — www.cdc.gov/std/treatment-guidelines/epididymitis.htm