Here is my situation. Two years ago I have sex with a CSW (protected vaginal and protected oral). After that I made several test. HIV 4th generation lab test at days 25, 45, 63, 84, 116 and finally 202 days and also Arn HIV test at day 25. I have been tested for sipbilis TPAh at day 25 and RPR at days 63 and 116. HBV negative at days 63 and 116. Urine PCR for clam, gono, tric, myco,... at day 12 (but it was two day after cipro, in hospital a doctor give me this because I have some pain, not discharge our burning), another PCR at day 63 (I urinated maybe one hour and a have before) and at 9 months I did another one just for Clamidia and Gono. Two Ets doctors in Spain told me after the tests at day 63 to dont worry and continue with my life. 

But my wife has some syntoms and thats because I am asking for your opinion: 

She has develop a rash , like urticaria, appears mainly in legs, torso, arms, ... and dissapear and then appear again in another place and its very itchy.  In the hospital said that maybe is a virical exanthema. Could be HIV or siphilis or another STI? Is that typical? Can I be the cause with my tests.