I've been having pelvic pain mostly on my right side and occasionally on my left for the last 5 to 6 months, the pain is more of a sharp pulling sensation, and it's not so bad that I can't function, it's more of just uncomfortable, I've also had other symptoms like passing flesh in my menstruation, really bad digestion every other month, gas, and now occasional pressure during sex. I've also haven't been able to conceive In The last year. These to me seem like symptoms of endometriosis, I recently had an ultrasound and the doctor said that it came out clear, and everything looks good on gynae side, and that maybe it's an appendix issue. I'm not convinced because my symptoms revolve around my cycle they get worse at ovulation and menstruation time and non existent to mild at other times. My initial thoughts were either I have endo or I have PID, can ultrasound show signs of endometriosis or PID or would I need further investigation to rule those out?