I checked my blood pressure today and it was 144/88 and just last week it was also high, I sometimes have sharp pains in my chest is this the cause?

High blood pressure. While that blood pressure is a little above normal it is not terribly high. The first thing to try would be life style changes such as decreasing the salt in your diet, increasing the amount exercise you do every week and perhaps loose weight if this is an issue for you. Many benign things can cause sharp chest pains. It is not likely related to your blood pressure. Check with your doctor.