I have only been with a few girls and not used protection, but one older lady I was with in December 2008 has supposively slept with a lot of guys. I had unprotected vaginal intercourse with her for about 5 minutes and also involved deep kissing and a minute of oral sex. I remember developing strep throat about 3 days after and taking penacillin for it...there were no other symptoms. In the time frame since, I have had about 2 incidents of sore throat or strep throat per year and very recently developed folliculitis on my neck from shaving and developed a white tongue after being on 4 courses of antibiotics in 3 months (for my throat and had a wisdom tooth out). Am I worrying too much?