Patient's question:
Irregular menstruation. My period didn't come in March, but after having sex on March 25th and taking birth control pills on the 31st, I experienced withdrawal bleeding again. Then on April 15th, I had sex without protection, but my period still didn't come. On August 6th, I went to the hospital for a thorough examination, and the results showed I was pregnant, about 16 weeks plus one week. Counting backwards from this time, the last menstrual period should have been April 15th, but my period didn't come that time—it was just the time of intercourse. Why would the last menstrual period be the time of intercourse?Doctor's answer:
Ultrasound examination carefully checks the gestational age by measuring the size of the fetal biparietal diameter. Each instrument's standard positioning value and manual operation of the device may have some errors, so there is no need to worry. Refer to the last menstrual period. It is recommended to improve various detailed examinations in the second trimester, balance nutrition, wear loose cotton clothing, and maintain a good mood. The recurrence of gynecological diseases severely harms women's health. Patients need to pay attention to postmenstrual follow-up examinations in daily life, maintain a light diet, and avoid spicy foods.