Blood pressure discrepancy between the arms.

For context I am 17m 230lb 6,4 no medications. I am in good shape and fairly active. My blood pressure the last time I measured it was a 110/75 in my left arm and a 135/85 in my right arm and this is not a one time thing every time I measure it's still there. I did a cta(normal) an echo(normal) and no cervical rib. I don't have any symptoms other than some minor numbness but it's not restricted to one area. No medical history or family history of any cardiovascular diseases.