Advice for potential endometriosis

I have had ongoing endometriosis related symptoms for years with no diagnosis. My symptoms became apparent about 4 years ago, severe abdominal pain to the point doctors suspected appendicitis, but negative. Left with no answers. Over the course of the next few years I experienced episodes of extreme abdominal and back pain, bladder urgency and suspected either UTI or kidney infection.. each time, negative. Again, left with no answers. The episodes have become increasingly more frequent and much more painful. I was in the ER last week with what everyone thought was gallstones, after blood & urine testing, CT scan and ultrasound... Nothing. Left with no answers once again. My symptoms are always present. Lower abdominal pain, rib pain, lower and mid back muscle pain (sometimes feels like Braxton Hicks contractions), severe bloating but unable to release the pressure. I barely eat due to feeling uncomfortably full afterwards, belly is protruded and no matter what I do I don't lose the weight even with my small food intake. My body feels heavy all the time like I weigh 1000 pounds and the exhaustion is awful. I've had 4 kids so thankfully infertility was never an issue, but I feel like that has contributed to not being diagnosed at 38 years old. I have not been on birth control for over 2 years (husband had vasectomy) and my period is basically non-existent. If I do bleed, it is for approximately 12 hours of active bleeding and I'm done. Continuing to have severe cramps, bloating, and all around like I have the flu sometimes. I recently found out my paternal grandmother had endometriosis and an emergency hysterectomy at 37 so it is in my family history. I'm working on seeing an OBGYN who specializes in endometriosis. Any advice, tips, etc you ladies can offer? I am done dealing with this and as much as I don't want it to be endometriosis, I just want answers so I can start on a path to some recovery and relief. Thank you in advance for any help you can offer! 🙏🏼🫶🏼