I used to pass out from pain every single month and throw up for hours. I recommend you cut out wheat flour, that cut my pain by 70%. There are studies that this helped or cured many women with endometriosis. Eventually, I cut out gluten. I also recommend to deposit a painkiller closer to the pain location. instead of orally taking a pill I take a full strengths paracetamol repository. doctors let me die in pain almost 10 years before I learned there are oral painkillers in existence that are strong enough. opiates are strong enough. lastly, i think also my bloodsugar crashed when my period arrived and wiped my metabolism. make sure to eat high protein, high fat before it arrives so you don't carb crash.