for the past 2 days my legs have been so achy. all day long and i feel so drained and tired. also the right side of my face has been hurting constantly. i thought it was sinus so i took the sinus/allergy medicine but it still hurts. but would sinus or allergies make my legs constantly ache? or is this something else? i feel terrible but i haven't thrown up or anything. i feel weak when i stand.