Is it normal two guys in two days

Me and my ex had been broken up almost a year. In that time I slept with 4 guys. In the last week of uni I accidentally slept with my friend when I had arranged to meet a guy I liked the next day.I say accidentally because I was super drunk and I dont really remember it. Then I met the other guy the next day and even thoughI didnt like him as much as I thought I did I slept with him too. The next day I was like, FML, so I got back with my ex. I havent told him and I'm not going to. We've now been back together for a few weeks but I haven't slept with him yet. I'm kinda worried if we have sex hell be able to tell somehow. Also, all the guys I've slept with since me and my bf split have been black, which is kinda random, just thought id throw that out there. Also I've only slept with them cuz ive been drunk, otherwise I wouldn't have done and I wasnt really turned on and didnt enjoy it alot (as far as I remember). They werent ugly guys (well one of them was a tiny bit) I just dont fancy many people. Is any part of this normal?