Getting depressed because I can’t conceive

I am losing all hope. My boyfriend(A) and I broke up August of last year, and I started messing around with an old ex(B) December of that year. A month later I got pregnant by my ex(B), and at the same time I found out that he was also married. I got an abortion, which I am still regretting. A few months later, my boyfriend(A) and I got back together. He knew of everything that had happened. We came to an agreement that we both wanted a baby.....Now it doesn’t seem that I am able to get pregnant. My doctor said that I have kissing ovaries, which I’m im sure is the reason. But now I’m beating myself up because what if the abortion is the reason why it’s so hard for me to get pregnant now. It’s really sinking me into depression because I feel that I have ruined my life. And I want nothing more to be a mom, but I could not bring a child in to this world with a married man :(