Ok I had to go to the ER last night due to my diarrhea and vomiting. I had a fever and one hell of a head ache as well. I was diagnosed with the stomach flu. While waiting for my blood tests to come back, I relaxed with an iv of saline to rehydrate me, and they said all my levels were in the normal range, except for one. My thyroid level is low. Just waiting on my family dr. to get back with me. Have your Thyroid Checked!!!