Might have it?

Leo

Im only 17 and ive been having pain after my period by maybe a week for about three months? My mom has had endo and she might think i have it too. I have super light periods and i dont have cramps 99% of the time. But when i first had the pain i was doubled over and i couldnt even get up but when i got ultrasounded and catscanned they coulds find anything? So we have the suspicion it might be endo? My mom has told me next time i have pain to tell her so she can push down on the area with her fist and if it helps the pain then she would be 99% sure i have it. Any advice?