My common sense tells me that what you experience makes sense. The EDTA will chelate out heavy metals and also needed minerals. You are probably losing calcium (among other things) which would be the way your body buffers the excess acid in your stomach. So, it doesn't surprise me that you have this problem.

You need to know how to do the EDTA properly. That includes when you supplement the minerals that you are losing. I have no experience with that so I have no idea what cycle you would be doing with oral chelation. But you do have to cycle that stuff, I think. You do have to put back the needed minerals at some point, on a regular cycle.

Did you get tested for heavy metals? Do you feel any improvement? What heavy metals did you test high for?

I do not think chelation therapy is something anyone should do on their own.