Heart palpitations are common during menopause because of the fluctuations of progesterone and estrogen in the body. I was researching this awhile ago because I had them so bad. They seem to have gone away for the most part. Every once in a while I might have a couple days where I have one a day and occasionally there is pain. I don't think I'm in menopause, but that seems to be the sites where the good info is for heart palps and hormones.
Take care.