After working in summers(outdoors) for last 2 weeks,it started with low energy level,tiredness ,slept complete day on last week monday,then again went to work on tuesday and. Swimming and wednesday,thursday headache and body pain started and it was at its peak on friday night and saturday and then it was better on monday and tuesday but not completely well,still have cold and cough and fever comes in between and feeling lazy and weak, after working for 3-4 hrs in home ,started feeling headache and fever again.