Headache with your other symptoms could be: influenza other viral infection. Check to see if you have a fever. Drink plenty of fluids & get rest. If worsening or worst headache in your life: see MD asap. If headache is mild & body pains resolve, see below for “headache diet” instructions.
https://drcremers.com/2014/02/migraine-diet-recommended-and-not.html