Im stuck and need advice?

so im 16 , i moved to a new school this year and met this guy . i thought he was cute and funny . but my friend started dating him , but guess what shes a whore and they only lasted for like a week so after that i started to get to know him then it tuned into hugging and kissing in the hallway . he wanted me so bad and begged for me everyday . i finaly gave into him . to this day we have ben dating for 6 months .in the 6 months i got prenant , well i ended up loosing my first kid :( now i relize our relationship is starting to fall apart , hes ben talking to girls . complimenting them , about their **** . hanging out with girls . throwing parties & hes starting to get controling . im not allowed to hang out with my friends but he can leave me every 5 mins to go see his . he calls me names all the time . & sometimes he gets a lil violent . he basicly has me wrapped around his pretty lil finger and i cant unwrap myself . i love him very much and dont know why he acts the way he does . dont get me wrong he is sweet , sometimes . please help me out with some advice .