I had a cortisone injection 8 days ago in my groin for pain in my hip. I have had many injections before with no side effects. I have been in constant pain in my groin and down my leg since the shot. I am treating it with cold packs with no reliefe in sight. Does not look like I have infection.
It is possible that this injection might have injured a nerve by mistake and that could be the cause of your shooting pain. You should take anti-inflammatory medicines like Diclofenac sodium or Ibuprofen and also add Tab Pregabalin 75 mg twice daily for 10 days and see whether you find relief. Do you have any weakness in the limb? If yes, then you should consult a Neurologist for the same. Take care, Chat Doctor. 