I feel like giving up!

I want so badly to make my boyfriend a father. He's ready for it as well. When we found out I was pregnant with our first at 4 weeks, he was so excited, he cried and told everyone, only to tell them 4 days later that I had miscarried. He was completely heartbroken, as was I. He has wanted to be a father since he was 16, at least that's what he's repeatedly told me, he's 25 now and up until then felt like he couldn't have kids until I came along. But, I feel like I've let him down because I couldn't give him what he and I both want. I was treated with a cancer drug for the pregnancy, but wanted to try again immediately. He, on the other hand, was so devastated that he wants to wait until the drug is completely out of my system so he doesn't have to face that kind of pain of knowing his dreams of finally being a father would possibly be taken away from him. Its been a month and a half since its happened, he told me he wanted to wait at least a month. I've had a regular cycle since then, and I've been taking a prenatal everyday this cycle and cutting out alcohol. I'm supposed to ovulate at the end of the month, but my CM and CP indicates that I'm possibly ovulating now. So I may take an opk to confirm it, if its positive, then please send some baby dust our way because we're ready to make him a father, and welcome another new baby into the family as I already have 1 18 month old that he loves dearly but he's ready, as am I, to extend our family! Hopefully its our month.