I have had 3 epsodes of what feels like a virus in the past year. I start with body aches, the low grade fever + chills and nausea that keeps me from doing anything. This all started after I had oral surgery about 18 months ago. Another thing I noticed is there is a pimple that develops with pus in it in the gums where I had the oral surgery and the gums are very tender. I have seen my dentist several times as took a round of PCN. Probably need to go back to oral surgeon?