I have a bad metallic taste in my mouth especially in the morning when i wake up. very bad breathe?

Decay and gum infxn: Are some of the reasons... Periodontal disease can form pockets around the teeth that harbor food, bacteria, ..Sinus infection and the post nasal drip that stayed on the tongue especially if the oral hygiene is compromised can cause bad breath. See your dentist.

Possibly: Bad breath may have its origins in your GI system, most commonly it is a symptom of just not brushing your tongue. Certain medications and vitamins, and rarely pathologies are related to metallic taste. First brush your tongue each day, and if not improved, consult with your pcp to differentially diagnose the problem.