How do I move out of in laws?

Anyone have advice on this? We originally moved in to save for a house but it's looking like it's gonna be another year so I want to go move in with my mom for a while but I'm 23 weeks pregnant and I know it'll look terrible. I tried to move out once and they begged me to stay... I don't know how to go about moving out in a way that won't make me look terrible. I love my man but I don't like living here...