unfortunately your symptoms are just too vague to be able to blindly determine a cause or significance over the internet. not knowing your medical history and have the ability to examine you is a huge barrier. my only suggestion for you is to consult your medical provider --- someone who knows you -- and have these troubling symptoms properly evaluated.
what causes deep sinking feeling from chest in heart area through to the back with nausea? i am 72 female. myglogsb