Went on lexapro (escitalopram) and soon after began feeling weak and cold. i learned low blood pressure can make you feel this way. is 114/66 low?

Healthy BP: A BP of 114/66 is healthy. If you were on multiple medications with the purpose of 'treating' or controlling your blood pressure then you could possible decrease the dosage a little as treating to less than 130mm hg usually is not helpful for simple hypertension. However, if you're not taking any medications for blood pressure control, then congratulations you have a healthy blood pressure.