Stop Googling. Never ever Google symptoms, they drive everyone nuts. Googling is only helpful when you have a diagnosis, and your diagnosis right now is you don't have it. As for the rest, the fact you're fixated on this suggests a budding anxiety problem that therapy can help.
So, maybe it is time to consider that the problem is not hiv that you need to worry about but your anxiety disorder. Do you treat this? Time to consider doing that. Irrational fear will eat away at you and no amount of reassurance will help if you are suffering an anxiety disorder. So, view anxiety as big a problem for you like if you had hiv. good luck