Acid reflux?
Here's a solution. I didn't know that my acid reflux was diet and weight related. I changed my diet a lot since my daughter was born at the beginning of the year. I stopped eating fatty foods (except once a week), not much alcohol, cut down on red meat, cut my sugar intake.... started exercising.
Two months into this, I dropped 20lbs (still 30lbs overweight), but what I noticed after that was that I'd forget to take the Prilosec and I'd get no acid reflux attacks. That nasty *** lump at the back of my throat that I thought was a ball of cancer or something and the thumping heart beat... both went away. I don't have shortness of breath either... its been very nice.