one week ago i was using a crow bar working in the yard and i pulled back with the crow bar expecting to pull back hard to get it wedge out of its area, it came out much easier than expected and i brought it back hard onto my right side of my chest bone ... i immediately felt like i hurt myself but continued on in the yard... not for too much longer though, that night it hurt any time i bent over, im assuming the blood flow threw off my equilibrium or something ... now just breathing, sneezing, blowing my nose, opening a jar ... sleeping ... feels like a heavy weight ON my right chest- no bruising. i am a 41 yr old - good health- female. could i have broken a rib? -