I'm 8 weeks pregnant for the past 3 weeks I haven't been able to keep anything down. Even eating healthy caused me to vomit. Well thank god that's subsiding but I'm left with this metal like taste on my mouth. I will eat something and the taste stays on my tongue for hours. I scrub my tongue a lot more too. And I've only been drinking water because anything else will leave a weird taste on my tongue. Is there anything I can do to get rid of this gross bitter taste stuck on my tongue?