Hi, for the past few days i've been having a sharp sudden pain to the mid right side back. yesterday i felt a little pain in my chest at the same time?

You may want to: get to a healthcare provider or even an emergency room ASAP, since the two things that could be really bad that need to be ruled out are heart attack and blood clot in your lungs. It could certainly be a musculoskeletal pain as well. Go get diagnosed and treated immediately do not wait.

Gallbladder pain : you most likely having gall bladder attacks. Please have your gallbladder checked out