Having a real hard time!

I just need to get this off my chest cause it weighs me down so much. So I had cancerous cells in my uterus and they told me that I would have to be on meds to help reduce the cancer. I did that and cancer is gone for the moment. But if I don't have my period regularly then I have to take progetoren to help start my periods. Well so now I'm ttc with clomid but I can't seem to ovulate. My temp has always been flat, every ovulation test I have taken has come up nothing. So we have been working  on just trying to ovulate for over a year. I finally had Af on my own the last 2 months by myself. So I have been taking an ovulation test everyday and on Tuesday I thought there was a faint line. So we BD. (Temp still flat) so I took a digital ovulation test that night and it said it was negitve took 2 tests wed both negitve. Temp is still flat. Just feeling over whelmed and just wondering if any one has the same problem. I need to get prego as soon as possible be cause as soon as I have my kids I have to have a historectomy so the cancer dosent come back. Just feeling stressed sorry if I broke any rules. Thanks