Sounds like you may have a pinched nerve when you do certain movements.. Maybe check into a chiropractor and see if he/she can bring about this sensation. Maybe that will put your mind at ease if they find something... Also, i have been to the ER 4-5 times for panic attacks/chest pains and all blood tests and heart tests are good. I HAD to trust what the doc is telling me, if not, you will still worry that something is being missed but it's not.