Providing you didn't have any open bleeding wounds on your fingers you were never at risk and didn't even need to test. Protected oral sex is no risk. I am not a doctor and I can't give professional advice but I do know this much...your risk was astronomically small at best. I am going through an hiv scare as well, but don't worry, I had a much higher risk situation than you and people are telling me I don't need testing...and these are doctors and healthcare workers! You're ok.