Doctors on the expert forum consider oral sex as a NO RISK exposure because of the very low probability of infection. There isn't a single confirmed reported case of HIV transmission by oral sex.
If the condom didn't break, you shouldn't worry over the protected anal sex. Condoms serve as an effective barrier to prevent the exchange of body fluids that transmit the virus. Therefore, you don't need to get tested.
Keep practicing safe sex with your girlfriend.
Unprotected oral is not a risk for HIV infection, and neither is protected anal. This particular situation is nothing for you to worry about as far as HIV is concerned. You weren't at risk this time.
In the future, if you have an ACTUAL risk, only a test at 3+ months post-exposure can tell you your HIV status. Be well.
-B