Good morning Jenna,
I hope your pain in down somewhat today. You have been through a lot and I am so sorry you are unable to walk still. When you talk to your doctor about your inability to walk does he offer anything suggestions than PT. Like perhaps getting a MRI in the future, or is it just "More PT"?
I am sorry the doctor you went to for a second opinion did not help. Perhaps you could talk to the physical therapist and see if he feels you should have an MRI. Maybe he can make a recommendation to your doctor? How many times per week are you going to physical therapy? You know... Might even try talking to your Primary Care doctor about it all, he might be able to help.
Most of all, I am terribly sorry that after enduring through such a painful surgery, you do not have your mobility back. I hope you are able to keep the pain down somewhat. Please know you are in our hearts.