About two weeks ago I had a sex. I remembered that my penis touched the vaginal fluid(because i used my hand to pick off the condom, then my hand got her vaginal fluid, and my hand then touched my penis ), but outside the body, and tomorrow(the next day) I got a inflamed node at my oxter, but it is the only one and i still feel aching now. Does a single inflamed node(lymphadenectasis) suggest Acute infection of HIV?