My[18f] boyfriend[18m] is being really unreasonable and childish, and whenever I bring it up he blames me. Or am I just being crazy?

F18, been with m18 for about 6 months now. We get on so well, I've never been with anyone who's made me feel so happy yet at the same time he has a total flip side to him. Everyone does, don't get me wrong I do too, but his is malicious almost. Recently he went away on a lads holiday, which he'd told me about before he went was renowned for being a total sex fest. It seemed like he was trying to make me jealous so on the weekend he was away I hung out with some girlfriends, one of them took silly pictures. He didn't communicate with me for almost the whole time he was there except to say: take those photos off Facebook and sending me texts like 'everyone thinks I'm the hottest person here.' This went on for the week, when I tried to bring it up with him he snapped back at me and swore saying that I was playing games with him. He got nasty. When he got back I decided to swallow my pride after the fight to not bring it up again, despite not feeling in the wrong, and e just brought it all back up again telling me how unfair it was that I had gone out. Then he proceeded to tell me about his holiday and how great it was and how he met so many amazing people etc. I again, swallowed it and didn't argue back and appreciated and listened o him telling stories.

Move forward to tonight, everything sort of behind us, and he keeps going on about the holiday. So I start teasing him, joking around, accidentally hits me in the face an starts laughing. I semi laugh because my face hurts and hit him back gently and all of a sudden it's not a game anymore, it's not funny and I'm the one who's upset him, despite him having actually caused my lip to split. Then he ignores me for the next two hours, and I'm say on the bed, he doesn't say a word or look at me, gets in to bed and lays there. SIDE NOTE : today we had unprotected sex. I am completely pro life(but also pro choice for everyone else) an so this kin of upset me, yet he did it anyway even though we have condoms. I then had to call the doctors for the morning after pill, which I feel very uncomfortable taking whilst he just slept not caring.

So I get out of bed, turn off the lights and go to the bathroom to cry for a bit because this all has taken its toll on me. I get back upstairs, he looks at me, rolls over in bed so I can't get in and falls straight asleep. I'm currently say on the floor of our room crying and typing this out on my iPhone. Sorry for spelling mistakes. I'm just so upset. This is becoming more frequent. His behaviour is essentially : it's okay for me to do it, but when you do it's just wrong and disgusting.

Am I in the wrong here? Do I need to change? Or what can I do?

TLDR; boyfriend is a hypocrite, is emotionally destroying me and it seems like he doesn't care.