Today as I bit into my food i began to get a toothache where i have my dental filling. About a minute later a metallic taste began to form on my right side where the pain was with a very bad headache. It has happened to me at least 2 times before like about two months ago with the metallic taste and headache. The first time it wouldnt go away with like 2 tylenols so i went to my doctors and gave me some painkillers which helped alot. The second time I went to my dentist and told him what has happened but he says that there isnt anything wrong with my oral health.Most of the time when the metallic taste goes away so does the headache. I feel very bad right now like naseous and dizzy and im wondering if my skipping meals all of the time could be causing any of these symptoms. Please dont tell me i have mercury poisoning

You should once again see your dentist. There is no one here qualified to give you a competant diagnosis. Seeking medical advise/opinions are not allowed on the forum.