Blood pressure

First post - brief overview - diagnosed Hashimoto's and Hypothyroid 18 months ago, on 150mcg Levo, no improvement in weight or symptoms (except have more energy and don't need afternoon naps). Despite doing paleo diet for five months, eating anything I want for five months and eating calorie controlled diet for four months my weight has remained constant. I do a minimum of an hour's walk a day, often longer. Also have PCOS and asthma. And in December discovered have fatty liver.

Blood pressure has always been on the low side. Six months ago seemed very normal (average 110/79), now six months later I am taking it again as GP surgery has requested it before renewing my meds and it seems really high - 144/110, 126/96 etc. Any one have an idea of reason why this would be happening, besides obviously being overweight? Should I arrange to see GP? She already thinks I am making up most of my symptoms so hate going to see her.