There may be some medical significance with pulse pressure relating to the aorta (blood vessel for left ventricle output) or pulmonary edema..For some insight, the pulse pressure is determined by the interaction of the stroke volume of the heart (each heartbeat), compliance (ability to expand) of the aorta, and the resistance to flow in the system arterial complex. By expanding under pressure, the aorta absorbs some of the force of the blood surge from the heart during a heartbeat. In this way the pulse pressure is reduced from what it would be if the aorta wasn't compliant.
Pulse pressure (the difference between systolic blood pressure -- the pressure during contraction of the heart -- and diastolic blood pressure -- the pressure during relaxation of the heart) may be widened, and diastolic blood pressure may be low. There may be signs of pulmonary edema (fluid in the lungs. You are young, but you should get a physical exam to rule out medical problems. Take care.
There is some general information at a thread with thisw forum in the archives:
http://www.medhelp.org/posts/Heart-Disease/diastolic-blood-pressure/show/1020471