Thank you very much for the quick reply. That assurance alone goes a long way.
Receptive oral sex does not put you at HIV risk of any magnitude. It is virtually zero. Therefore you do not need a test, however if you are unable to cope with your anxiety, go and get yourself tested for HIV any time now and collect your conclusive report. Though clinically, you do not require a test, however it is suggested only for your peace of mind and laying all your residual fear to rest permanently.
The symptoms you mentioned are not related to HIV