Im 24 M. My bp is 140/85. Is this normal?

Im 24 M,5.10 ft,75 kgs. I hit the gym alternative days and also play professional badminton on weekends. I don’t drink or smoke . I mostly avoid eating outside food . Only occasionally sometimes. I work as a software developer with not so much pressure at work and no personal problems with the family or anything else to stress . My problem is , I have checked my bp twice this week and its 140/85 . I have also observed that i get tensed while checking the bp like with the pressure on the arm . What might be the reasons for my bp above than normal ? . Im little worried about this. Any ideas or suggestions on this. Please help