I had a one-night stand with a woman 11 weeks ago. We met, had a couple of drinks then had sex in the back of my car. She asked me if I had protection I said no, so then she takes out a condom out of her purse. We had vaginal sex (the condom did not tear or had a malfunction) but she wanted to give me fellatio I said only with a condom. As I was taking out the condom to put on a new one, she happens to grab my penis with the hand she was rubbing her vaginal; it was only about 10 to 15 secs I estimate. I put on the new condom, gave me fellatio, and I finished inside the condom. We parted ways and never saw her again. However 2 days later, I felt irritation on my genitals and penis and decided to see a doctor. She gave me some creams and I asked for an std test and the results came back negative 2 days after exposure. I took another one 10 days later because the current symptoms were not cured. The results came back negative. I took another test at 5 weeks because I saw my genitals get swollen and again the results were negative. The last std test I took, my tongue was and still is swollen and its white and has teeth marks at the edges. I also have a very sore throat, sinus problems, ears are aching, very watery stool, and at times I feel like throwing up for no reason. The results came back negative again for everything. From all the info I have given, is it safe to say that my h.i.v or std test at 11 weeks is conclusive even though I continue to have these symptoms? what are the odds of seroconverting after 11 weeks, should I take another test at the 6 month mark, and how much of a risk is it to get h.i.v. if the hand she was rubbing her vaginal with made contact with my penis for about 10 to 15 secs