to what sounded like a pop noise while sleeping,it was then that i experienced incredible, steady, (not throbbing) pain in the center of my chest cavity,2 minutes later my left arm went knumb,i swallowed 2 aspirin and drank alot of water,feeling came back in my arm about 15 minutes later,the feeling in my arm only came back about 80%,and has remained since,i have a constant prickling feeling in my hand and fingers,loss of strength also in arm,there is now a soft lump in my armpit,and the pain i