Should i be worried about the metallic taste coming from my mouth?

Generally no: At 31 years of age you are probably not taking any significant collection of drugs which usually cause the metallic taste. If you are taking any new drugs they could be the culprit if you have had recent dental work you may want to call this to the attention of your dentist. If you have switched to a new dentifrice of some sort whether that be toothpaste. Mouthwash, whiteners, switch back.

See a dentist: If this is a recent development it could be an indication that you have a problem with one of your restorations which needs to be checked.