This is not an uncommon presentation. Realize that in most instances, GI distress is producing inflammation that can readily increase the potential for vagus nerve-induced palpitations to occur and depending on your body position, can sometimes cause an extended period of inappropriate stimulation.

In such instances, a change in body position will often result in belching off trapped gas or air, or otherwise dislodge pressure against the diaphragm. producing interruption of the sequence.

You'll be fine. Again, this is a common occurrence

Best regards and Good Health