The only risks for HIV in adults are:
1) Having unprotected (no condom) penetrative anal or vaginal sex, OR
2) Sharing IV drug equipment with other IV drug users.
You did not have a risk for HIV. You did not need PEP.
If you are having side effects from PEP, talk to your doctor about stopping PEP, since you did not need it anyway.
We get a lot of questions about oral sex here. But it's not a risk for HIV. The only risks for HIV are having unprotected vaginal or anal sex or sharing IV drug needles to inject drugs. Canker sores under lip will not lead to hiv transmission. Air and saliva inactivate the virus. No risk