Hi, i had that problem horribly for the longest time and couldnt figure out what it was from. After about a month of suffering, i finally figured out that it was from the Zoloft i was taking.

I basically lived on Tums and pepcid ac until i asked my Dr to take me off Zoloft and put me on something else.

I also have a friend who experienced the same thing with Prozac, so this may be a little more common than i thought?