Hi desperate
Here is what it says on this site about high blood pressure and HRT:
Hypertension
Blood pressure should be measured and, if high, should be controlled prior to starting HRT. Blood pressure measurement should be repeated 3 months after starting HRT and is then usually checked at annual review. There is a very small risk of conjugated equine estrogens causing a rise in blood pressure which resolves on cessation of treatment. In the presence of controlled hypertension, HRT is unlikely to worsen control; some recommend using transdermal (patch or gel) HRT.
Sage should be used with caution if hypertensive and St.John's Wort should be used with caution if taking antihypertensive therapy. It sounds like it should be controlled and the doctor is right to be concerned if your medication is not reducing your BP.
I am sure you've had all this advice but there are many ways in which you can reduce your blood pressure naturally - modifying diet, alcohol, salt, weight, smoking, exercise, caffeine, relaxation therapies.
http://www.nhs.uk/Conditions/Blood-pressure-%28high%29/Pages/Prevention.aspxPerhaps also, you might consider a transdermal method of HRT with the Mirena coil as Dancinggirl suggest in her posts below?
Hurdity x