D&C now can't get pregnant :(

I had a d&c in October. I have had 2 positive ovulation test on the last 2 months. But still not pregnant :( when we started trying, I got pregnant the 2nd month. Then we had the d&c. Now nothing. I'm starting to get depressed and stressed out, which I know is not good for me or trying to have a baby. How do I get passed this. And how do I explain it to my husband? Anyone else having this problem?!