I don't think I can have children!!

I'm 26 and don't think I can have kids. I've had two abortions 8yrs ago and a cystectomy about 3years ago. My bf and I always have unprotected sex and he cums inside me and nothing ever happens. Not that I'm planning for a child right this moment  but I just find it odd that we have sex multiple times a day like every other day and I haven't had another oops. Why is this??? Oh and my obgyn told me I have endometriosis....