Hello, 2 Souls, and welcome to Psych Central! I have to say I am a bit surprised that you are only finding out about this situation now. Obviously he can have sex with you since you are pregnant. I'm wondering if he is just saying all that now because he is upset with you. Some men have trouble with sex with a pregnant wife.
You might want to post in our Sex forum. Those folks might have some ideas. Some women are content with masturbation, but it depends on how much they miss the actual physical intimacy. Is he at least willing to cuddle and help you to reach satisfaction?