First period in 10 months....

So last night my period finally started after not having one for 10 whole months. Several pregnancy tests were taken, protection was used, I moved 2 times, and changed jobs 3 times. I know stress can “pause” your cycle but 10 months?? My periods are often extremely painful and I lose a lot of blood. I take iron to help and drink lots of water, and take at least 800mg of ibuprofen to ease it all, sometimes a little extra help from smoking (which really helps almost completely crush my cramps tbh)

I’ve had cysts on my ovaries and doctors were thinking I have endometriosis as well... has something like this happened to any you? A huge time gap? Extreme pains? What do you do? What helps? What caused the gap?