Abusive relationship (LONG STORY)

I was 16 when I started dating my first boyfriend. I'm 18 now. I don't know why I gave him a chance? There's been a few guys who expressed interest in me but I blew them off thinking the were just after one thing. Sex. I met him when I was 15. He wasn't as attractive as the other boys and he seemed sweet. We started dating in March 2016 relationship seemed fun and happy until we had our first fight in May. We didn't lay hand on eachother just yelling. My 17th birthday was in June. We had a chill night. Sitting outside with him, me and my friend and her boyfriend. We walked around and my friend and her boyfriend were further ahead of us and he pulled my hood which cause it to choke me and he wouldn't let go until I started to scream. I walked away from him and he followed me. I walked back to my house in tears, he tired to hug me to stop crying. Many fights occurred after that to many to remember. There was many times including yesterday were he wanted to have sex but I didn't and he continued to after I said no and forced himself on me. A fight that happened a month ago was terrifying. I was babysitting 3 young kids, 10, 6, and 3. He came over uninvited and I told him to leave but he wouldn't, he screamed at me and I told the girls to go into the back bedroom, I didn't want them to see what I knew was going to happen next. He grabbed me by my thoart I wouldn't let go until he threw me onto the ground and kicked me in the stomach. He beat me for almost an hour while the kids were still in the back room. The oldest wanted to call the cops but couldn't find my phone. There has been a lot. He's broken down my bedroom door because I made him mad. He's put holes in my wall. He has caused me to get 4 stitches in my hand because he pushed me into a glass panel. But I stayed with him because he found some way to make me forgive him. I found I was pregnant a few weeks ago and even after o told him I was pregnant he continued to hit me. The worst part about this is that he tells everyone I'm the abuser. He tries to play the victim and from what I know everyone believes him. His mother has even threatened me. I'm just a 4 foot a 130 pound girl up against a 5'9 250 pound man. I wish I would have left the first time. This relationship has made me not want to ever be with anyone ever again. I'm afraid of men. I will always be.