For the last for months I have experienced the worst pain ever in my right arm bicep and shoulder. Sometimes it numbs and I can't lift or stretch without feeling the annoying pain in my arm. It sometimes feel as if I'm getting my blood pressure took, and how the band gets real tight and feels as if your circulation is being cut off when your blood pressure is high. I am 34 yr old female. I have high blood pressure as well as a mental disorder, so I'm already taking numerous of pills. I would like to know what my problem is before I go to the doctor and also why has it lasted so long with no relief from the pain. it's gotten worse. Also I normally sleep on my right side but either position I sleep is painful and have lost sleep due to this annoying pain.

can anyone help with what might be the problem?