My boyfriend is letting me down😑

My boyfriend has always been amazing to me and the kids
But I feel like since This pregnancy I've done everything on my own.. All the cleaning and cooking around the house... Taking our garbage ...chasing the kids around.. I never gets naps but he gets them whenever...   When I try to read him little things about the pregnancy he makes it clear he's not interested . 
We planned this pregnancy.. He begged me to have another baby and now he's just a completely different person and I'm tired of feeling so alone all of the time 😭