Throughout my whole pregnancy my bf has been acting like he’s the pregnant one. At 8 months pregnant his mood swings are the worst.

Currently in quarantine at his parents house since my mom is at home in isolation due to covid and for some reason my bf cannot stand my 14 year old sister (I understand why, we’ve had issues with her behavior in the past, typical high schooler attitude) but I’m feeling so bad since I have nowhere else to go and he has an issue with every single thing she does. He’s constantly asking me how long she will be staying with us as if she had somewhere else to go like wtf he knows my mother is all the family I have where tf would I go and drop my sister off ?! Feeling so lost and lonely i have no where else to go and I am not about to leave my sister alone, he’s been such a bitch me and my sister I wish nothing but to go home but I can’t since my mother tested positive for covid and I literally give birth in a month