Are they evorel conti patches where you have a continuous supply of progesterone? It could be the type of progesterone which is causing the symptoms and you could try another patch, Femseven, which has a different type of progesterone. I found I got on much better with those than with Evorel. You are right to think that at your age it is a really good idea for you to use HRT in order to protect your heart and bones up to the normal age of meno.
Taz x