Hi. I had anal sex with my boyfriend and now, i am experiencing fever, chills, body aches, a horrible, horrible headache and fatigue. I also feel super dehydrated even though I m drinking plenty of water. This has been constant for the last 3 days. I have been taking acetaminophen to break my fever and it works, but my fever always comes back. The fever has also gotten higher every day. It s up to 102.9 today. What is wrong? I feel awful.