Confused

So I've always had bad cramps to the point of almost throwing up and within the past year they've become tolerable. But I always cramp about 3-4 days before I start and Glow is saying that I should go get checked for endometriosis because I log lower back pain almost every day and because of how many days I cramp before I start. Should I ask about it? Because I'm not in pain all the time other than my lower back.