Is it just me

Hi My name is Nora & I’m 16. So My periods are at least a week long sometimes 8-10 days and my doctor told me they were irregular and my pain is worse than other girls periods, my doctor said the pain is going to get worse and I’m worried because I hardly get out of bed when it’s that time of the month. My stomach cramps are so bad like on a scale of 1-10 it’s definitely a 10 and I take pills to relieve the pain but I just throw it up and suffer those next 6-7 days. Also my body won’t let me eat so, recently I searched the symptoms and I found “endometriosis” but I’m not sure what to think, does anybody else have this problem or is it just me?