Is it just stress and worrying or HIV?!

I had unprotected sex with a guy december 3rd 2011. I asked him and he sadi he was with only one girl before me.. were in highschool too if that helps. about mid february i noticed some genital itching inside and on the lips of my vagina. no sores, lesions, rashes or anything jsut an itch. the docor tested me for gonnorhea, chlamydia, and trich and a yeast and they all came back negative. well the itching lasted for about 2 months, but i was having sex with my current boyfriend every day. i took about 5 days off and the itching stopped.. but now if we have sex like 2 times a day it will feel a little itchy and dry. does sex everyday make the vagina itch and dry out? what else could it be?

Then about late march i saw an ad about HIV, i immediately started freaking out and i stressed so myuch i got headaches. and my muschles in my shoudlers were tense. i had not other symptoms except a little sore throat. no fever, swollen lymph nodes, sweats. i have been feeling a little tired and my breath sometimes feels tight. i do have an anxiety disorder but i came off meds about 6 months ago. i have no rash but i did notice my tounge looked a little white for about 3 days. i know stress can cause that also. When i dont think about it at all or de-stress i have absolutely no symptoms at all, but when i do think about it i have the symptoms i described. My current boyfriend has no symptoms at all either. am i stressing or could it be HIV?!