Yestereday afternoon I began feeling a dull headache with back and neck pain. The headache worsened accompanied by occasional nausea. By the evening the Headache was extremely debilitating and chills set in. The nausea also got stronger until I vomited around 7:30, at which point the chills and nausea went away with only a dull headache, which was gone by morning. Was this a migraine, a virus, or something else? A few months ago I had a TSH which indicated I had hypothyroidism. Could thatbbe related?