Should I go back to my dads....? Valid or not

We have been together for two years, we’re engaged and have been TTC anyways. We hang out with my fiancé friends ALOT like every weekend Friday and Saturday. Well his “best friends baby momma” made a post on Snapchat saying “shout out to all the girls who wanna fuck my man and act like I don’t see it” I slid up because we go to the gym together and stuff and I thought we were friends and she said whoever it may be pertaining too. I want time away from his friends and he said I’m keeping him from them and cried. But I’m always uncomfortable and never welcomed...I don’t like how he handles these situations and if I were to try and talk to him he would cry and say he’s gonna kill himself....

I wanna go home...I miss it....there’s too much here for me but I need to know if I’m being valid or not