please help..

Let me start by saying this started right before I got pregnant. Some days are better than others.
I have an amazing husband, truely amazing. Now a few years back, we used to have sex every single day, even more than once. We were always together. Now.. It's like I don't know him.
It's not him, it's me..
I love him. But, when he kisses me, every part of my body wants to push him away. When we have sex (which is rarely) im relieved when its over. I snap just the presence of him. But yet at the same time i dont want anyone else, i want him. I love him. I want to kiss and have sex, i want to love him, i want to make him smile. It hurts me. 
I know thats confusing but i have no idea what to do. I told him and he just says i dont love him and i want a divorce. But i dont! We've tried consuling, weve tried going on dates. 
We have a 7 month old baby and i'm 4 months pregnant.. Whats going on? 💔💔