Hello Welcome to health care magic Dear patient, at the time of accident your BP could have gone up because of pain, anxiety and apprension which is a normal physiological response of the body and hypertension is not a transient rise in blood pressure but a persistant rise in blood pressure and if your BP level of 140/90 persists for three consecutive readings recorded about a week apart in the absence of pain and anxiety and recording had been done after about 15 minutes of rest then probably you got boder line hypertension . For a blood pressure level of 140/90 intially no medicines are generally given but attempts are made to decrease the blood pressure through non pharmacological means like low salt intake , daily exercise for 1/2 hour to 1 hour 5 days a week, low fatty diets, avoidance of smoking , weight reduction and if blood pressure remains high i.e more than 140/90 after 6 months of attempting above measures then only medicines will be needed to lower the bloob pressure . However you can have a consultation with a physian for regular BP monitaring and for some investigations to rule out secondary cause of hypertension which is generally common for hypertension in young people i.e less than 40 years of age, like renal function tests, thyroid function tests etc wish you good luck thanks Dr Arshad