Anxiety can be very powerful and manifest itself in physical symptoms. Don't get me wrong, if you are having symptoms -- discharge, burning, pain, etc -- they should be taken seriously and evaluated by a professional. However, generalized symptoms such as aches and sensitivity are often anxiety magnifying our regular body sensations. Not all the time, but it is not uncommon among us worriers!
could the whole mind playing tricks on you relate to other stds and mysteriously have symptoms show up such as swollen glands?
The swollen glads and fatigue could be due to many things, most likely a garden variety virus. You cannot rely on symptoms regarding HIV - testing is the only way to know. To ease your mind, you could get tested - my guess it will be negative. Also, searching the web is probably not a good thing if you are worried about HIV! Your mind can play tricks on you and you might mysteriously start to have symptoms that seem HIV-related.
Good luck,
Em