"Im getting palpitations and headaches,the nurse seems to think its all because of stopping hrt."
Nurse is spot on.
Your doc is completely wrong.
You can have a high bp reading due to many things.
A lot of us get higher when we just goto the doc!
In terms of HRT, you can continue if you want to, its not your doc's choice.
If you have a longer term issue with high bp then as long as they are giving treatment and monitoring that then HRT can be taking in conjunction with that.
Don't be fobbed off by the doc if you dont want to go back to suffering the symptoms.
Hope you get better soon.