unlike usual, the past two weeks my feet and lower legs ache. after a five hour work shift I cant stand any longer. I am using my asthma inhaler more often. I have pain under my ribs in the center: pain sometimes start on my left side near waistline. my upper arm tissue aches somewhat. I am having head aches that I have not had before. I am more tired and feel unusually weak at times. I am hot one minute and cold the nest.