is my bf abusing me?

me and my boyfriend have been dating for about a month. he gets pretty rough during sex. the other night we were having sex and he said he was going to get his pistol and if i didnt put it down my throat he would break up with me,he didnt get the pistol,he got a knife instead...he put it on my neck and asked me when it hurts,and once i said it hurts he stopped. Another night he smothered me with a pillow during sex,it scared me. He does things like this alot,he holds my mouth and tells me to shutup. sometimes he acts like he is going to choke me but doesnt put a lot of force. he threatens me in a joking manner but i dont know if he is really joking or not,he says if i cheat on him he will spit in my face or that ill be done with or that he will get some girl to beat me up. We actually have a really good relationship bseides all this..he's not possessive like most guys who are abusive,he doesnt get too jealous,we are happy together. Ohyeah another thing he does during sex is gives me hickeys which is fine but sometimes he bites kinda hard..once he bit my arm and i have a bruise from it. I also have small bruises on my thighs from having sex. He made me give him a hickey thismorning..MADE me. idk im not used to dating guys like this and i dont know if im in a abusive relationship or not. please let me know..thankyou
sarah

YES, you are being abused! Get away from him now before something really terrible happens to you. It is only a matter of time.