Strange taste on my tongue

So for the last week my nausea has been picking up and often feels like heartburn too. At the same time I get this strange metallic acid taste on my tongue and don't know how to get rid of it. The only thing that makes it better seems like fruit. Other than eating all day, does anyone else have some tips on how to get rid of it? Side note I also bought Gin Gins for the nausea last week maybe the ginger is burning my tongue or something? Help!