hi, your mind can cause excruciating pain but in your case your heart is fine. so it seems your mind is not satisfied and it has it's own reasons.
this is what I suggest; TWO THINGS
1st, go to vitamin store (other stores will cost a great deal more money) buy Pro-biotics in the highest possible culture counts and get enough to take 200 billion (not million) cultures daily for 1 week, THEN cut in half each week till u get down to 7 billion daily;
2nd go into your private place and have a conversation with your inner self, your sub conscience and if possible speak out loud; examine the things that bother u and u brush under the rug, ignore, tuf-it-out etc. NOW U DO NOT need to come to any conclusions. Just have the conversation and do so every day for the first week and see if after a week your problems go away and u can throw away the zantac.
I wish u luck; give it a try as u have everything to gain and nothing to loose.