Had the condom failed you would have known without a doubt. You don't need testing.
PROTECTED SEX = NO RISK,
If you are not sure about the past protection status, get yourself tested! All the best for it. And dont mix symptoms with HIV infection. Its Your anxious mind along with some sort of guiltiness make you feel so. So realize that thing with your reasoning mind and move on. HIV is a very difficult to transmit virus and it is more likely to be a NO RISK case. Contact experts like teak, diver for gr8r soltns