I Fell 2 And 1/2 Weeks Ago, Fracturing Ribs. Very

I fell 2 and 1/2 weeks ago, fracturing ribs. Very painful, and now have constant pain in my upper stomach. What could cause this extreme pain that has lasted this long ? I've had colonoscopy and upper prior to my fall. No major problems. I do have MS, which is why I fall. Also breast cancer 2 yrs. ago with radiation treatments. I've taken Hydrocodone and aleve, but have stopped since I don't want to get in the habit.
Lying down is very painful. I've seen my internist. What else can I do ? I'm miserable. Thanks for your help.
Harriet Osterberger email YYYY@YYYY