Hi, thanks for using healthcare magic It is possible that you may have an upper respiratory tract viral infection (common cold or flu). This would present fever, congestion, fatigue, headache. Treatment would consist of : rest, fluids, decongestants and cough medication. Decongestants can be oral or topically applied to the nose (eg otrivine or normal saline). They are available over the counter and can be found combined with cough medication. If the cough becomes wet then you may need a mucolytic (medication to break up mucus in the chest). This is also over the counter. I hope this helps