Hello! Pain during intercourse and after it is characteristic for endometriosis. It means that a uterine cells are growing outside the uterine, mostly in abdominal cavity. To diagnose it mostly laparoscopy (some kind of surgery where a camera is put in to a 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 will show nothing, and blood tests, urine tests are negative, laparoscopy is necessary. There can be other reason of your pain - dry vagina. You can try some lubricants. Vaginal infection should be ruled out as well. You should see your gynecologist for examination and intra vaginal ultrasound. Hope this will help