Quoting The Biscuit Farmer.:" I was going to call the cardiologist tomorrow.. I was on a heart monitor for a month at the end of my ... [snip!] ... never got the results from him. I'll ask him when I call, and... should I call my PCP or wait until my appointment on the 19th?"
See what your cardiologist says first. If you have an appointment on the 19th you can wait till then I'm sure, it isn't that far off
I would say try walking but if your heart rate spikes from just standing up then walking probably isn't a good idea.