Thank you for asking on HealthcareMagic.com, providing better healthcare for you. I have gone through your case and I can understand your concern. When making a diagnosis, consider not only the absolute BP reading, but also the presence or absence of other cardiovascular risk factors. Factors include the following: A. Family history of hypertension B. Obesity C. Alcohol consumption D. Stress E. Sedentary lifestyle F. African American ancestry G. Male gender H. Age older than 30 years I. Excessive salt intake J. Medications K. Drug use This drop in your blood pressure may be related to orthostatic hypotension (postural hypotension), a form of low blood pressure that happens when you stand up from sitting or lying down. To have a normal blood pressure you should know that these factors are modifiable: -Sedentary lifestyle -Smoking -Diet -Lipid control -Sodium intake -Alcohol intake -Obesity Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health. Please don t forget to give your valuable feedback and five star rating, to help me assist you in a better way. Click at I Find This Answer Helpful too . Please, write a review about your experience with me.