I left my fiancé but returned...

Hi All:

I am 9 weeks pregnant and it seems that every since I found out, my fiancé character has changed. He’s very demanding and aggressive and there is no compromising with him. It’s his was or no way. Several weeks ago we got into two bad arguments, both of which I felt unsafe and he called me names and belittled me. Everything with him has went entirely too fast and he wants all of me while only giving me 0% of him. Today, I felt the drive and so encouraged to leave, so I did- however, when I left he called and I answered & that suck me back In. He does not know that I was in the midst of leaving, but I am unhappy with him- in addition to when things don’t go his way- all hell break loose. I do not want to be lonely during my pregnancy, but I don’t want to be in a toxic environment either- in which his home is toxic for me and my pregnancy. I am stable with a decent job and my own place, but I am scared. I feel vulnerable and weak to him, as he is aware that I am unhappy, but I just need the courage to leave. I’m venting atm...