Period pains are unbearable and not much helps. Not yet diagnosed with anything.

I have debilitating period cramps every month for the first few days of my period. I always either pass out or vomit on the first day and usually can’t really move.

The only thing I’ve found that helps the quickest and is the most effective is codeine (panadeine) but it takes an hour to kick in and it only lasts an hour. I’ve also found an anti-inflammatory helps (ponstan) but that also takes at least an hour to work and doesn’t fully help, maybe only about 70%. Heat packs help too but again takes ages to work. Weed is illegal where I live so thc/cbd isn’t an option. I’ve tried the contraceptive pill like 10 different times and it didn’t help any of the times, and I’ve tried taking iron too. I’ve also gotten heaps of internal and external scans on my uterus and they didn’t see anything.

Does anyone have any ideas of what the problem might be or what next steps I could take? They’ve ruled out endo and pcos so I’m stumped and just over it. I’m young and don’t want to have a hysterectomy so any other advice is appreciated! Also any advice on how you deal with pain with a full time job would be amazing.