london lynn,
I agree with edelweiss. Many of us eperience bp spikes we are not even aware of. Stressing over when the next one might occur will not help. Many blood pressure spikes go completely unnoticed, because in most people there are no symptoms of elevated blood pressure. A few of us get symptomatic with a sudden substantial rise in blood pressure.
Sudden bp spikes often point to hormonal causes, (adrenals & thyroid) if you have secondary hypertension. Besides prescribing the meds to control hypertension, your doctor should actively look for its cause. Has there been proper diagnostic testing? If you suffer frequent considerable fluctuations in blood pressure, their cause should be thoroughly investigated. In some cases the causative factors/conditions can be treated, resulting in a normalized blood pressure.
flowergirl