Is this bad? Help.

So i was at my boos house and we were just going at it and he was sucking on my boobs and he sucks on my nipples, which is fine because it felt nice, and for a couple days they were swollen and purple, still normal, and after a while the nipple itself was like dry and peeling so i peel it and it started to bleed. Um? When the get hard they didn't look normal and the nipple looks flat. Help.