A brief drop in heart rate could be caused by different things. Perhaps you have some kind of heart block. But there are different levels of heart block - some that require no treatment and the most severe would require a pacemaker. You say you have a heart condition but didn't explain what it is.
If your heart rate drops to 30 and stays there, you may pass out. But at that point someone will call 9-1-1 for you. In the meantime, take things easy for now and see what the cardio has to say about the monitor results.
Thanks. I am being treated for high blood pressure, cholestrol. I've heard that beta blockers can do this.
I've had heart rates as low as 30 while awake when taking beta blockers. I don't know enough to answer your question but here's a piece of common sense: if you don't feel dizzy, your brain and therefore your body is getting enough blood. The heart's only job is to put enough pressure in your veins to keep things moving fast enough to stay alive.