I don't think that you have stomach cancer. You are not throwing up or losing a lot of weight, which are good signs (((HUGS)))

I think by the symptoms you have been talking about, you probably have acid reflux or something similar that is resistant to OTC meds. Untreated those symptoms can cause problems, so the GI needs to check things out unless he can prescribe a med that relieves your symptoms first

IBS usually effects your lower abdomen, so that is a separate issue. They are both very common problems tho.

Try turning your AC off and unplugging it for a little while and see if it works better when you turn it back on. Sometimes appliances need a little break.
I'm glad that Robert is going to take a look at it for you though because that may not work, and he is so handy

I'm so sorry that you are scared and having negative thoughts right now. I wish that I could take that pain away (((HUGS)))
When you are feeling that way, are you able to read? Or are you too overwhelmed?

I wish that all that sleep helped.