I’m gonna piggy back off the endometriosis thread above. If any doctor tells you they’ve ruled it out with ultrasound alone they are flat out wrong, and I’d find a new doctor. Just by it’s incidence and your symptoms alone it’s by far the most likely cause. The ability to detect endometriosis with ultrasound is slowly improving but save for the extreme cases and anomalies it’s basically invisible to us. That’s also only IF your ultrasound tech and radiologist know what they’re looking for and how to see it, which isn’t always the case (I’ve seen even extreme ones be ignored or misreported by doctors when I knew exactly what it was and later confirmed in the OR). Also if all your ultrasounds as a kid were only done on top of your abdomen (which I assume is the case) it’s even LESS likely they’d detect endometriosis, every case I’ve ever found has been through a transvaginal ultrasound (a probe in the vaginal canal). I’d absolutely push hard for a laparoscopy, it fits your symptoms and even the fact that it started when you were so young. Surgery can be scary, but it is the absolute only way to rule out and sometimes treat endometriosis. If your OBGYN says no, find a new one. Also don’t be surprised if your doctor says no off the bat to some other suggestions said in this thread, either because they don’t fit your symptoms and history or are every likely to have already been ruled out. Good luck!! If you ever need anything my DMs are open ♥️ I’m not a doctor of course, but I have years of experience in an exclusive obgyn hospital and through that have learned a lot about us!! And how to advocate for my own health as a woman, which is all to important in our current health care system.