Severe period pains, what do I do?!

Hi everyone, so I suffer from terrible period pains to the point I can’t even remember who I am in those first 15 hours of my period beginning. The strongest painkillers I can find don’t even effect it. The pain is always worse when I ovulate from my right ovary. I also get pain all up my back and down my legs. I’ll suffer from migraines, vomiting and passing out. I also get so tired during pms and post period that I’ve actually slept 21 hours before.

I’ve been going to the doctor about this now for 10 years and it’s only in the past 3 that they’ve started running tests. I’ve had blood tests, hormone tests, ultra sound, my thyroid checked, and also a laparoscopy to check for endometriosis....they found nothing...

What am I supposed to do? Is there anything else they can test for? I’m feeling hopeless right now and wondering if anyone else is in my position. Is there something I havnt been tested for? The doctors don’t seem willing to help and often dismiss my pain. Help?!!