A blood pressure reading below 120/80 mmHg is considered normal. In general, lower is better. Doctors classify blood pressures under 140/90 mmHg as either normal or prehypertension. Normal blood pressure is lower than 120/80 mmHg. Prehypertension is blood pressure between 120 and 139 for the top number, or between 80 and 89 for the bottom number. For example, blood pressure readings of 138/82, 128/89, or 130/86 are all in the prehypertension range. If your blood pressure is in the prehypertension range, it is more likely that you will end up with high blood pressure unless you take action to prevent it. ********************* Your blood pressure was right on the borderline to be considered Hypertension. If this is unusual, try & think about any medications that you are taking. Alot of meds can change BP, are you on Birth Control Pills? Cold Medicines are meds we often forget about that can raise your blood pressure quickly.Even some Antidepressants can have an effect on your blood pressure. Here is a link that lists all the medicines that can raise your blood pressure: http://www.mayoclinic.com/health/blood-pressure/HI00053 I would suggest checking that first to make sure that isn't the reason it has jumped artificailly. My blood pressure was just checked & mine had jumped too. I mentioned I had been taking Sudafed & my Dr. thought that was the cause. I re-checked today & it is normal, back to 120/ 70. Did you have alot of caffeine before your BP was taken? Have you gained any weight? Both of these can cause a slight raise in your BP too. I would suggest stop taking any meds & go back in 2 weeks & re-check it. It should be back to normal. If not, you can talk to your Dr. about changing your diet & adding more exercise to help it go back down to normal. If you don't want to re-visit the Dr., just go to your local Pharmacy, alot of them know have a BP machine in their waiting area where you can take it for free. Good luck!