TMI! (pic of scrapes and bites)

Sooo. My cat bit me yesterday while we were playing "tag". He got me pretty good and outside the red it looks bruised but idk why. Also on the other pic I scraped my knee on my skateboard and I DIDN'T clean it out. I was too lazy to unfortunately. I'm afraid it might be infected. The only thing I did to it was put neosporin on it and put on a bandaid. It's yellow on top and all wet. It's gross I'm sorry. And also sorry for the bandaid marks.