After Anal Sex

So I just had anal sex for the first time today! Everything went perfectly fine but I noticed about an hour or two later when I used the bathroom that there was a little blood when I wiped, and it's still happening now 6-8 hours later. It's not much blood at all, (similar to what you might see on a tissue if your blemish bled after popping it) 
I just wanted to ask you all and see if you guys had experienced this!