Weird period and suspected endo

Might be tmi. So endo runs rampant in my family. I went to an obgyn when I was young, about 13 years old and despite having such horribly painful and heavy periods I was put on a small dose of bc for awhile to see if it'd help. I ended up stopping it since it never helped me and they were reluctant to up the dose. I've had one miscarriage, about 2 years ago. Now I'm ttc. I was in a stressful enviorment and my period went mia for 2 months and leading up to that my period was getting shorter and lighter which was ok with me and didn't worry me since I wasn't ttc. I even was happy since my periods get so painful they have me on the floor and pale in the face from the pain and midiol can rarely save me. I've had a period for 3 months now that I'm no longer stressed. It is light and spotty, then gets heavier for a day and there is hardly any uterine lining in the blood. It also gets painful in spurts then calms down. I'm just really worried about my ferility I'm going to a dr soon but my mind won't let me rest. If anyone has had any experince with this please comment. <3