Hi Dinnie,
Sorry to hear about your palps. I am perimenopausal and have palps too & am currently wearing an event monitor! You're definitely note alone, loads of us have these horrible things.
I had them really bad before hrt and they were much better within days of starting hrt. I have been on Femoston 1/10 for 3 months and the palps are now back, hence the monitor! I have also had some spotting. I am convinced my oestrogen levels have dropped and this is the problem. I can only speak for myself but I wouldn't assume hrt has caused your palps, it may just be your own declining hormone levels. Or it could be you need a different type of hrt?
I wish you well, I know how uncomfortable these things are. Mine have always been benign, supra ventricular ectopics, but my cardiologist just wants to check they are still the same. Early signs are that they are the same, which is good.
Hope you feel better soon,
Sally x