Why does a woman experience lower abdominal pain after sexual intercourse?

Lower abdominal pain after sexual intercourse in women can have several potential causes, ranging from benign and transient to more serious underlying conditions. Common physiological explanations include pelvic muscle strain or cramping due to vigorous activity, uterine contractions during orgasm, or mild irritation of the cervix or vaginal tissues—especially if lubrication was insufficient or if there was friction-related microtrauma. These typically resolve within hours and are not associated with fever, bleeding, or systemic symptoms.

However, persistent or recurrent postcoital lower abdominal pain warrants medical evaluation, as it may signal pathological conditions such as pelvic inflammatory disease (PID), endometriosis, ovarian cysts (particularly if ruptured or torsed), uterine fibroids, adenomyosis, or adhesions from prior surgery or infection. Less commonly, it may be associated with gastrointestinal issues like irritable bowel syndrome (IBS) or diverticulitis, or urinary tract conditions such as interstitial cystitis or ureteral stones—especially if pain is accompanied by dysuria, urgency, or changes in bowel habits.

Red flag symptoms requiring prompt assessment include fever, chills, abnormal vaginal discharge, postcoital bleeding, nausea or vomiting, unilateral sharp or colicky pain, or pain that progressively worsens. A thorough clinical evaluation—including pelvic examination, transvaginal ultrasound, and targeted laboratory testing (e.g., STI screening, CBC, CRP)—is essential to determine the etiology and guide appropriate management. Women experiencing new-onset, severe, or recurrent postcoital pain should consult a gynecologist or primary care provider for timely diagnosis and intervention.