Help...Anal gone wrong

Alright so.. I had sex for the first time yesterday and my boyfriend wanted to try anal. We did. Had the condom. Lube. Foreplay. Everything so that i was relaxed because well yeah i was nervous. Well i was in doggy and you know he started to enter and it hurt like hell. And he had just the tip in and he pulled his penis out quickly. Oh my god. Oh my god. Oh my god. Well i cried for a few minutes and he was sorry and he hugged me. Gave me some space but anyway..today after using the restroom... I saw that i was bleeding tiny little spots AND even though its a little bit and its very faint im freaking out. My bum hurts a bit (not that much just sore) and just im more worried about the bleeding part. Someone please help. Please please please