I had normal BP until I hit menopause and it rose dramatically although nothing else changed, no weight gain or added pressures.
With Oestrogen it goes down again, my GP confirmed this to me, it's usual if a lack of oestrogen caused it to rise, which it can do.
Unfortunately logic isn't applied and the rules are that HRT can't be used to control BP, in fact BP must be under control before starting HRT, even if HRT would solve the problem.
So I take ramipril to bring my BP down to where it would be if I took HRT, after that I'm allowed HRT, but not before. I don't want HRT any more since trying tibolone, that is the best medicine.
I wouldn't worry, your GP wouldn't be wise to take you off HRT if your BP is already a bit high, they are much more likely to wait and see how the trend goes, so take measurements and keep a note of them if you have a BP machine.
My GP had me buy my own and it's very reassuring at times, but initially it was so he could see what my readings were at home over a week.