A "taste" in my mouth!?

Ca

I cannot describe this taste for the life of me. It is almost like a sour metal taste but not metal. Oh my lanta it is the most bizarre experience I've ever had during pregnancy. I have to constantly brush my teeth/tongue, otherwise I feel nauseas and have a hard time eating. I never had this with my other two! Is anyone else going through this? I'm bringing it up to my OB on Wednesday. I hope she doesn't look at me with crazy eyes