I get cortisone injections every 5 months into the joint at the base of my big toe. The last one hurt like crazy and I was off my feet for almost 4 days before I could bear to walk.
However, the pain of the shots is worth it because I get a few months of relief. Between the shots, the massager, and new medication, I can actually get around pretty pain free for the first time in years.
Good luck with it OP!