Need an MRI

Dr., I had a lumbar diskectomy in the L-3 & L-4 five years ago. After surgery I had another MRI done because I was still in a lot of pain. At the time I was on workers comp & they paid for everything. The MRI came back & said I still had herniated disks in the same area as surgery.Eventually the case was settled & I received a small amount of compensation. Now five years later I live in constant pain,can not work anymore, am on pain meds & have applied for SS Disability. Was turned down. SS did an x-ray of my spine & I have read that an x-ray will not show herniated disks. Also have herniated disks in T region. I have no insurance or the money to pay for an MRI. I am in a bad situation financially. I have an appt. with an attorney because I am appealing their decision. I had a severe attack last week that left me unable to walk & bedridden. How & where can I possibly get a new MRI which will show disability that I am not faking any of this?