I check it daily, whether on or off... Like i said the last time, LINATIL (Enalapril maleate) is a very safe and cheap BP-medication. 5-10 mg per day should do you just fine. I'm on it and have been for a long time, actually my BP has been fine for a good while so i take 5 mg just in case...
You and your doc may also consider a beta-blocker since your heart rate was 106, in my experience propranolol is best or at least suits me, i only take it when my heart rate is too high and doesn't seem to get down (very rarely), usually due to stress... 10-40 mg is a good and safe dose. The down side is that you might feel very tired on beta-blockers and much more on other ones than propral...