With a previous history of urinary tract stones, then we still need to rule out this as stones may be recurrent and some may not be readily seen in scans. However, your abdominal CT scan was clear and these rules out several conditions. Your gynecologic consult also did not show anything. This excludes endometriosis and other gynecologic problems. Differentials for this may be chronic pelvic pain syndrome, which is a poorly understood nerve related condition affecting both men and women. "Most women, at some time in their lives, experience pelvic pain. When the condition persists for longer than 3 months, it is called chronic pelvic pain (CPP). This is a poorly-understood condition that likely represents abnormal neurological function, either in the peripheral nervous system or central nervous system. "
A referral to a pain management specialist may temporarily be of help. There is no known definite treatment for chronic pelvic pain. Other differentials may include interstitial cystitis and fibromyalgia.