Is my blood pressure high. Beat faster!

I am 29 year old weight 110.i had history of anxiety.recently stopped using medicines and had some withdrawl symtoms.heart paltipulations and chest pain.my doc suggested me to take nexito again untill i am fine.but i dint take.i am doing some excericies for some time daily.i feel my heart beat very fast when i excersice.at first i used to have sleepless nights after stopped using medicine but now i was fine.sometimes my gastric problem irriates me i feel bloated and uneasy without any reason and when it happens i feel uncomf to eat anything and the gas struck in my stomach dont go out.i dont is this because of my gastric or anxiety.yesterday i checked my bp and it was 120/90 my husben d said it too high you are having bp.and from then i am stressing out about it.after suffering with anxiety if anything happen to me it is worrying me.even if it is fever or anything.i am stressing out why am having high bp.what to do.when i take stairs or do exersice my heart beat faster