I Have Been Having Pain In My Hip For A

I have been having pain in my hip for a few months. I am scheduled for a X-ray with a injection of me drool and Marciane 1/2 hr. Prior to an MRI . I had a cortisone shot 2 weeks ago which didn't help. I am concerned about more cortisone if the MRI shows that I need surgery. And there are many scary side effects for the Marciane. Should I be concerned re side effects? Should I cancel the appt.?