2 Days Ago I Started The Day Just Feeling Sluggish

2 days ago I started the day just feeling sluggish and no energy. As day progressed it became worse and actually went to bed early with a house full of family. Had chills, then an hour later severe sweating. Hardly slept at all. Body aches, tingly skin but ibuprofen seemed to help with chills and sweating. Fever has been running between 100 to 101.4 Last nite instant replay. I have found a raised up pecan shaped bump between my back shoulder and neck. Would truly appreciate some advice. Thank You.