So, long story short, my fiancé and I right now live in a house with my dad, his gf and my 1 year old sister. We split rent and utilities with them, so they're more like roommates. We're 29 weeks pregnant with our first baby, and this house isn't ideal for raising a child. It's disgusting all the time, my dad and his gf don't clean up after themselves until they absolutely have to. My fiancé and I will clean the house when we have time but he works full time and I work part time and am a full time student, they both work part time so they don't have to pay for daycare. On top of that, my dad will not turn on the AC, or if he does, it's only 4 degrees cooler than outside. My baby is due in June and we live upstairs. It's already around 78-80 degrees up here all the time, and that is way too hot for the baby, but he's stubborn and says it will be fine. I want to move in with my mom until we can get a place of our own, we would split bills with her just like we do here. My mom is also a licensed daycare provider, so she could watch the baby if needed and it would be convenient if we're already there (we live about 25 minutes away from her in the oposite direction of school/work). But he doesn't want to move, and he won't tell me why. How should I address this???