I don't know what to do.

My husband and I barely have sex anymore. I've been on my period going on 3 weeks but even before then he was starting to not want to have sex. He says it's boring and it's too much work to get me in the mood. I feel unattractive, disappointed, and sad. He doesn't take me seriously anymore. He never says anything nice to me besides I love you, and everything else he says to me is mean and cruel but they're just jokes. He says I need to lighten up and learn to take a joke. The jokes themselves don't really hurt me, it's just the fact that that's all he says to me, nothing nice. I love him so much and I can't bear the fact that we might end up in divorce. We decided to start trying for a baby in April last year. But you can't get pregnant if you're not even having sex. Please someone help me fix my marriage.