ok guys, im gonna try to explain everything in one post but please bare with me as everyday is like a living hell for me from being paranoid about hiv. around 8 months ago, i had a sexual encounter and 4 months after that i got an hiv test and it was negative. but from that exposure i think i developed a phobia from the hiv virus. so after that axposure, i think i had another one 3 months ago where i went to a really dirty cafe place while i was on vacation and i ordered a hooka or shisha and i thought that the tip of it had semen on it because the waiter was really disrespectful and it looked like semen but i did wipe it off with a napkin but i accidentally used the napkin (that i wiped the hookah with) to wipe my mouth afterwards and i had cuts my my lips. and the last possible exposure that could have gotten me hiv was august 1st, 2011(a few days ago), i went to new york city and when i was walking in the streets, i stepped on a nail that went through my flip flop and poked my feet but didnt bleed, and then 10 minutes later i stepped on a piece metal pin that was a little rusted that went through the hole that the nail made on my flip flop but this time i felt a little pain but it still didnt bleed. now the reason im going crazy is because 3 days ago i noticed a lump under the skin on the leg crease of my right leg , it started out as really itchy at first but not its just pain when i touch it and feel it, its a little mobile, and hard . im afraid it might be like a lymphnode that is swollen from the hiv virus. now i know that you guys say that the hiv dies when its outside a host, but for instance what if the nail and pin that i stepped on was stepped on by another person right before me , and what if the semen ( or atleast thats what i thought it was ) that was on the hookah was fresh ? could i still have a risk of getting hiv. and btw after that hookak exposure, 3 weeks later i had cold like symptoms (runny nose, tired, sneezing, fever , etc) . so thats pretty much it did i have a risk and please acknowledge me about this if im wrong .