High BP

60m, 275lbs; no smoking, no drinking, Meds: Lisinopril/hcl and Levothyroxine.

I had a very high initial BP reading of 200/125 about an hour ago, which reduced to 185/100 five minutes later, and then settled around 135/80 for the next several readings (over the next 45 minutes). Is it possible that the initial 200/125 was an anomaly since it was the first reading on the monitor? It's impossible to calibrate some of these at-home devices. If it happens again, I'll go to the hospital. Otherwise, seeing the doctor this week.