Yes I already asked him to do a rapid test and he has agreed. It's not like the condom was buried inside of me the ring of it was outside of my anus. Just nervous because I'm new to anal penetration this was one of the reasons I have stayed away from it. On other forums (thebody.com) the doctor stated as long as the base was outside and the fluids were contained in the condom it was safe. We are going to do the rapid test though I just was tested Monday for my yearly test.
If you trust your partner enough to put his penis in your anus, then I would imagine you should be able to trust him enough to believe that he was tested and is negative. However, you may also want to ask him if he has had any other partners or exposures in the mean time. Considering the possible risks involved I would certainly contact a doctor tomorrow, and maybe even convince your partner to take another test for peace of mind.