I've given up battling with my BP. On Monday my BP was 147/98 which is really high and I couldn't believe I felt fine with it being like that... They sent me straight to the hospital and said "you'll be in until baby comes and probably induced today"
Got there and MW tested it again and it was 138/82

so they just gave me a sweep and sent me home.. lol
I think my surroundings really effect my BP so I've given up worrying about it.
I brought a BP monitor for home (8.99 from Lloyds pharmacy!!) and I check mine everyday (just encase) and its never as high as it is at the docs..
Just try not to worry, and I'd recommend buying the BP monitor if you are worried..