How can i remove that metal taste in my mouth?

Metal Taste: This can be from an acidic mouth and a new amalgam (silver) filling, from medication that you are taking, the breakdown of an existing amalgam filling or something else. You should be seen by a dentist to determine the cause.

Dysgeusia: is a change in your sense of taste due to a variety of causes; from medication you may be taking to dental problems. In your case pregnancy-related (estrogen) changes in your sense of smell may also lead to dysgeusia. It is very common condition in pregnancy and will be solved soon. With Geographic tongue people may notice they have a“bitter” or “metallic” taste in their mouths. Good luck.