TTC 7 months...believe I have endo

I got my period young, they were heavy and had bad cramps. Would sometimes stay home from school or get those heating pads to attach to my underwear. Was on BC for awhile and stopped taking it when I was about 18-19. 

My periods are regular...they come every 27-29 days. I usually have brown discharge or "spotting" for a day or two before AF shows which is usually my indicator that AF will be there any time. I always thought this was normal. And for years I've been tracking my periods and have always had about 4 days of bleeding (heavy, heavy, medium, light...) and then about 2-3 days of brown discharge. I used to mark that as part of my period but now I'm thinking all this brown "spotting" before and after AF can't be normal. The first two days are very crampy, I take a ton of ibuprofen and can go about my day. Third day kind of crampy and then it goes away.

Also I've always complained about random legs aches. Sometimes it starts in like my right ovary area and goes all the way to my foot and I just take ibprofen. Again didn't think anything of it, thought it was normal until now that I am thinking endo. 

Last night my lower back ached and sent tingling aches all down both legs and even with 3 ibprofen it was uncomfortable.

Sometimes during intercourse, usually around ovulation, if he does to deep it is a sharp pain, I always thought It was just too deep never thought it could be endo. Also around o, sometimes it feels like my ovary is enlarged and he's rubbing against it which isn't painful but very uncomfortable. And today, we had sex and it was painful near my right ovary when I was laying on my side so we just switched it up. 

I made an appointment Monday with a new doctor. I'm terrified. I don't know what to think. Everything points to endo and now I am convinced I will not be able to conceive naturally. 

Anybody going or have gone through this? Any advice suggestions? Any success stories? Just needing to vent and gain a little hope...