<s>[INST] Hi, I am a 29 year old female. I have been suffering from a sore/tender lower abdomen for about a week now. I was at my doc on friday & he put it down to a twisted ovary as he has done before. He checked my urine for a uti as well as pregnancy and both were clear. I had intercourse with my boyfriend last night & it was quite uncomfortable (which has happened a few times in the past), about 20 mins later I was very sore and found it quite uncomfortable to sit & walk. It eased after about an hour but I m still having niggly pains today. Any idea what it could be?? [/INST] Hello! Pain during intercourse and after it is characteristic for endometriosis. It means that a uterine cell are growing outside the uterine, mostly in abdominal cavity. To diagnose it mostly laparoscopy (some kind of surgery where a camera is put into an abdominal cavity) is necessary. However, before endometriosis is suspected, other abdominal cavity diseases must be ruled out. To do that abdomen ultrasound or even abdominal CT needs to be performed. If this shows nothing, and blood tests, urine tests are negative, laparoscopy is necessary. There can be other reason of your pain - Chat Doctor.  You can try some lubricants. Vaginal infection should be ruled out as well. You should see your gynecologist for examination and intro vaginal ultrasound. Hope this will help </s>