Taking Lupron for egg retrieval, but I have endometriosis. Could that cause problems?

I had a laparoscopic surgery in late February and my surgeon said he was able to excise everything. However, the surgery lead to my uterine cancer diagnosis. I’m currently going through egg retrieval treatments and taking Gonal and Menopur with Lupron being near the end. However, I just saw a giant forum for endometriosis saying that Lupron is essentially poison and can react very badly. Should I be concerned about this medication? My doctors never mentioned any kind of complication with it, but I know most times the years worth of side effects due to a treatment the doctor administers once isn’t really of consequence to them. I’m 26 and do not want to experience menopause symptoms so soon in my life.