Don't be surprised that your BP is always changing due to posture, time of day, if and when a Doc is present, when the temperature is different, etc. That is the whole point of your BP. It's designed to adjust as needed depending on your mood, surroundings, stress levels, have you just eaten, etc. Even differences in right and left limb are normal.
If your BP often seems elevated, and you have some concern about whether you might be hypertensive, you should ask your physician about doing an Ambulatory Blood Pressure Monitoring (ABPM) study. This is designed to capture your BP throughout the day, and night, so that you have a true picture of your BP and how your body is reacting to all the factors mentioned above.
The opinions expressed in WebMD User-generated content areas like communities, reviews, ratings, or blogs are solely those of the User, who may or may not have medical or scientific training. These opinions do not represent the opinions of WebMD. User-generated content areas are not reviewed by a WebMD physician or any member of the WebMD editorial staff for accuracy, balance, objectivity, or any other reason except for compliance with our Terms and Conditions. Some of these opinions may contain information about treatments or uses of drug products that have not been approved by the U.S. Food and Drug Administration. WebMD does not endorse any specific product, service, or treatment.
Do not consider WebMD User-generated content as medical advice. Never delay or disregard seeking professional medical advice from your doctor or other qualified healthcare provider because of something you have read on WebMD. You should always speak with your doctor before you start, stop, or change any prescribed part of your care plan or treatment. WebMD understands that reading individual, real-life experiences can be a helpful resource, but it is never a substitute for professional medical advice, diagnosis, or treatment from a qualified health care provider. If you think you may have a medical emergency, call your doctor or dial 911 immediately.