Sour stomach and bad taste in mouth?

Emily • Baby Boy born 9/5/19! Second baby due 4/13/21!

Full disclosure that I still have morning sickness at 16+2....but does anyone have a constant sour stomach and a bad taste in their mouth? I can’t kick this and it’s driving me crazy.

They say second trimester is supposed to be easier, but so far it hasn’t gotten better. Not sure what’s causing all this...if there’s anything I can do or if it’s just part of pregnancy?