GROSS taste in my mouth... why at 28 weeks?

nmpg15235

I thought all that jazz would be over with after the first trimester? It seems that now more towards the end, all of the horrible stuff is coming back!  

When I had my son, I felt WONDERFUL every day never any issues. This pregnancy started out horrifying... then got better... now as im nearing the end is bad again. Any suggestions on how to rid this nasty taste?

 

I have an intense urge to scrub the crap out of my tongue til it bleeds!