[UncleOxidant]

> Sometimes NSAIDs make the pain unbearable.

This sounds like an upper digestive tract issue. You should look into Roemheld Syndrome. https://cara.care/digestive-disorders/upper-abdomen/roemheld... I was having a lot of feelings of skipped heartbeats and my doc realized I was also having a lot of digestive issues so he told me that Roemheld seemed most likely. What I noticed is that skipped beats occurred around the time when I needed to burp. The burping releases pressure on the vagus nerve which goes to both the heart and the stomach. When I realized this my anxiety was much reduced.

In my case I found that I needed to limit chocolate consumption, sit up straighter and practice deep breathing.