Hello and thank you for using HCM.I carefully read your question and I understand your concern. I will try to explain you and give my opinion. You should know that we talk about hypertension if we have mean value that exceeds 140 / 90 mmHg.A person might have high value during emotional and physical strees so its mandatory to judge on mean values. You should not worry about one sporadic value. The fact that you previously did not have hypertension doesn t mean anything. Essential hypertension is a chronic disease that appears in older ages.Usaly It doesn t give any symtoms but left untreated it slowly modifies heart muscle. So , if I was your treating doctor I will recommend some examination like an electrocardiogram , a cardiac echo to evaluate heart function and walls, a full blood analyze and holter pressure monitoring to evaluate your values during day and night. After all this we can better judge about your situation and how to deal with it. Hope I was helpfull. Best regards, Dr.Ervina