Infertility issues...

We've been trying to get pregnant for about 6 months now. And I think I had an early miscarriage last month. It was so easy with the twins. We tried once... didn't think it would work because I just got done with cancer-- and then bam... pregnant with twins. So easy. I've been doing a lot of reading online about hormonal imbalance.. and I think that's what I have. It would explain my migraines, the fact I can't get pregnant again, my low sex drive, mood swings, etc. I am going to go see my gyno on the 14th so I can't wait to see what they say..and run some tests. I'm just so frustrated. Even though it's been going on 4 years since cancer it still affects my daily life. My body is run down and broken. I get tired easily. I can't work out for long periods of time because I don't have the full capacity of my lungs, my heart runs slower, and now this hormone issue. I just wish things were easy.