I Woke Up One Morning Cannot Put My Bra On,

I woke up one morning cannot put my bra on, raise arms to put hair up, difficulty going up and down stairs, getting in and out of car, muscle weakness and stiffness. This does not go away it is constant. My tongue also has ulcers and a little sore. Prior to this I had major leg cramps for over a year and Dr said It was probably potassium deficiency. I also have had issues with my gastric bypass that was done 2001. I am missing my normal life.