has any of you other mommas got a weird taste in the back of you mouth late in pregnancy? I noticed it yesterday and it's not going away. it's really hard to explain, lol. it's kinda chalky kinda metalicy :/ that's the best I can explain it. do you think it's normal, or from something I ate. I noticed it after I drank a frost gatoraide then I had to take 2 tums. it's started almost emmedietly after that.