Frustrated and depressed

My fiancée and I started trying in October only to find out that I had secondary amenorrhea. Last couple of months the only way I could have a cycle was if it was jumpstarted by Provera continuously trying starting to lose hope and get depressed. Had a possible positive for ovulation two weeks ago had a crazy amount of sex and again no positive on the big test. 😢😢

What can I do I’ve tried taking folic acid and prenatals I’ve gone to the OB. He’s been tested he’s fine maybe it’s me that’s broken.