I have just started to have really bad heart palpitations. Anytime I relax, my heart just goes haywire and it makes it hard to breathe. Is there any way this is related to my MS? I dont really know if I should be worried about it and see my ms doctor or my primary care doctor. I've been told it could be related to my upcoming menstrual cycle? I guess I just dont know what to think it is? Can anyone help?