Hi Carol,
You were doing so well, try and get to that place again if you can. These flutters are just another type of ectopic as far as I can tell, but if it makes you feel better why not ask for another monitor test so it can put your mind at rest? Could it be adrenaline if it happens mostly when your having a good time, although I dont want to presume, perhaps RLR can shed more light on that possibility?
I think your doing superbly with your weight loss, from what you have indicated. And Im sure its 'never too late' to get fit and lose weight etc etc, keep it up, im sure everyone here is 100% behind you

Could you possibly be stressed/anxious about the change with your doctor, something like that, when someone you trust leaves and you feel your not getting understanding (did he/she really fall asleep

) from thier replacement it could make you pretty anxious and then start the palps again.
Above all try and keep smiling if you can and know were all here if you need to vent.
Stu