My entire life i have always had healthy bp. 120s range over 60s range

Im on week 3 of my first test e cycle 500 mg a week. Im running arimidex .25 mg eod. I was feeling a little light headded during my workout today so i took my blood pressure after i was done and calmed down. It was 154/75. Any advice? Im really worried. Its only week 3. I then went and saw my physician .my BP was 141/65.
She said that was normal, but from what ive read 141 is in the hypertension stage 1 range...

any advice ?