In the absence of other symptoms it seems unlikely that you have a heart rhythm problem. Can you draw any physical connections between the "procedure" and "bloating"? I have no ideas/knowledge about chiropody but it seems possible that such a procedure could put pressure/stress on organs/nerves similarly to what bloating would do. Just a thought.
Good luck,
no other heart rythm symptoms
Do you have any other heart rhythm symptoms? Have you ever been checked with a EKG by your primary doctor or a cardiologist? One should include some heart checks at the "annual" physical once one reaches middle age+.
Have you discussed with your Chiropractor? There may be some connection between your "adjustment" and the high HR that is known to the Chiropractor.