25 Years Old.started Feeling Heat At My Back.normal Temperature.felt Tired

25 years old.started feeling heat at my back.normal temperature.felt tired and weakness in my legs.symptoms went away without drugs.now I have a papillary swelling on my tongue.just. One papilla.all these symptoms Started after unprotected. Sex.what wrong Doc.had a blood test but all parameters Were normal.I tremble sometimes.the heat feeling at my back doesn't seem to go.