What causes lower abdominal pain after going to bed?

Generally, "getting into bed" refers to sexual intercourse. Lower abdominal pain after intercourse may be caused by physiological factors or pathological factors, such as semen allergy, pelvic inflammatory disease, etc., which require targeted treatment. The specific analysis is as follows:

I. Physiological Factors

During sexual intercourse, the uterus and cervix may be stimulated, leading to contractions and pelvic congestion, thus causing lower abdominal pain after intercourse. This is a normal physiological phenomenon that usually resolves spontaneously within a few hours and does not require special treatment.

II. Pathological Factors

1. Semen Allergy

Some women have particularly sensitive constitutions and may be allergic to semen. If during intercourse, the male partner does not use a condom, semen entering the body may trigger an allergic reaction, resulting in this symptom. It is recommended to use proper contraception during intercourse to prevent such allergic reactions.

2. Pelvic Inflammatory Disease (PID)

Poor personal hygiene during intercourse—for example, if the male partner has not bathed—may allow pathogenic microorganisms from the male genitalia to invade the vagina, causing infection and triggering pelvic inflammatory disease, thereby leading to post-intercourse abdominal pain. In such cases, medications such as cefaclor dispersible tablets or roxithromycin dispersible tablets may be taken under a doctor's guidance.

In addition to the above causes, follicular rupture, corpus luteum compression, and vaginitis can also lead to lower abdominal pain after intercourse. It is advisable to seek timely medical attention at a hospital to avoid delaying optimal treatment.