Ok, so the title is a lot more dramatic then how it is...
I had anal for the first time 3 days ago and it was fine. Didn't really hurt - was a little uncomfortable but that was it. We didn't use lube, but there was a lot of erm, natural lube so there were no problems.
Now, I've just been to the toilet and there was a little bit of blood coming from by behind... definitely not normal, obviously.
Are the two related? Could something have torn? But if so, wouldn't it have bled a lot earlier and at the time?