I was put on provera to stop my period(lasting 7 months) for 10 days.. I have a throbbing pain in the middle of my chest into my throat which comes and goes throughout the day has anyone else have this problem??

I think this is something need to see a doctor about sooner rather than later. A lot of birth controls are hormone based and this is essentially us tinkering with a precision piece of biological equipment. Imagine that the Depo shot is the equivalent of changing out the internal computer in your car with an iPad app that will control the timings of it. Most times this will get the desired effect through sometimes this is cause your muffler to fall off. I think your muffler is close to falling off.

I would get an appointment with your doctor ASAP.