Me and my girlfriend were having sex last night and we were both drunk. I decided to insert it into her anally for like a minute without a condom. I wish I didn't do this, but I can't turn back the time. Both of us have been checked and are free of std's but is there anything else I can get? Maybe a urinary infection or something, I'm not sure.
You can get several diseases that way. The chances are small, however.
Lots of steady couples practice anal sex without a condom, with no health repercussions. If something shows up, get it treated right away. Otherwise, don't worry.
As long as you're free of STDs, the chances of catching anything that way are extremely slim. Yes, a bacterial infection is very, very remotely possible, but I have known plenty of people who regularly have unprotected anal sex, and no one has ever gotten anything. In fact, no one has even taken the possibility seriously. You'll be fine.