Diagnosed with ectopic heart beats some years ago. Have also tended to be very out of breath when I first lie down ever since getting ME. Last year or two a lot of nausea as well - I thought maybe this was all due to POTS. Last few months I've also had increasing pain and weakness in arms. The pain is mainly in the upper arms, running downwards from front of armpit. When I have this I can't seem to raise my arms normally at all. Anybody any ideas, please?