I engaged in protective sex and was the recipient of anal sex. The other guy took the condom off and continued to top me. He then said he pulled out but I am sure there was some ejaculate in me afterward. He says that he is negative but I dont know what to do now other than to get tested as a baseline and then repeat 3 months from now. Is there anything else I can do?
Yes, there is one additional thing you can do. You can learn from this lapse in judgment and never ever put yourself at risk in the future.