I had vertigo and pain in back of head 1 month ago doc told to take rest but i did weight lifting and played games all day on phone days later i had first hypertension episode with bp 150/100 i'm now on meds did not taking rest caused hypertension?

You're a little young for the onset of essential hypertension which is the commonest type& tends to be familial. Resting& inactivity may lower BP but once you become active again the improvement is shortlived. Continue treatment, good diet,regular exercise & strive for ideal weight. BP goal is 130/80 or lower. Your MD will order any appropriate testing.