About 4 weeks ago, I gave unprotected oral sex to a new partner. (I'm female, he's male.) I do not know his previous sexual history, but I know I'm not his first partner. (In hindsight, not using protection was a foolish choice.)
Within 2 days, I developed a fever, sore throat, coughing, congestion, etc. I was hoarse for about a week. A doctor told me I had an upper respiratory virus, and I chalked the sore throat up to this. Most of the symptoms cleared up in a week or so.