Almost exactly a month ago, I had unprotected oral with a girl I met (one night stand). We both performed on each other, followed by protected vaginal sex. She had good hygiene, but I do not know whether she was truly clean or not. Within a couple of days, I had a very sore throat, along with fever and headache, and swollen lymph nodes on my neck. After a pretty solid week of feeling crappy, I finally went to the doctor... He didn't think it was strep, but gave me Zithromax to knock it out.