Oral sex is always HIV risk free be it to the giver or the receiver under any circumstances, even when the partner is HIV+ and so is kissing. That means if there's no unprotected penetrative sex involved, you had no HIV risk at all even the slightest and your symptoms have nothing to do with HIV.
For STD concerns, you could consult on STD forum on MedHelp. We're HIV prevention specific.
You had no risk for HIV from oral sex...you can check the STD forum for questions on other STDs. No need to worry about HIV