What Causes Pain On Upper Arm While Lifting Objects?

Good evening. My issue is with my right, top upper forearm just below where my arm bends. Sudden onset and has been unchanged since 1 1/2 weeks ago. The pain only happens when I lift objects. It is a burning kind of sharp pain but is un-detectable or painful when I press in the area. Additionally, there is no brusing or swelling to indicate a pulled muscle. The first time the pain happened was when I woke up laying on my side with my right arm bent in half. Ibuprophen, ice, heat, nor massage gives any relief.