Frustrated!

We haven't had sex in almost 2 months and I have asked him and he says no. We are not together however I am having his kid. I have tried to mess with someone else and was not successful. I couldn't even get horny. I crave him he knows how to touch me and knows how to please me. I need it. I want it. Work is stressful and being pregnant is making things more stressful. What can I do or say to get him to give in?