Without personally examining you or reviewing your MRI films, I cannot make an accurate medical opinion nor can I predict whether or not the pain will go away. WHat I can say is that the MRI certainly does not explain all of your symptoms. A disc bulge at C5-6 and C6-7 would not cause problems with your pinky and does not explain the leg and buttock pain (which would be a problem lower down in the spine - that's why they want to send you back for more), but could possibly be affecting the shoulder if a nerve is being pinched. ANother possibility is that these are just muscle spasms following the car accident.
For further localization, an EMG can be helpful in determining if there is any nerve damage and which ones are affected. Good luck.