hello
I agree so much with Dr. Smith and Glentaj. You should have the spinal MRI. From your post Illpn I understand that the doctor had first suggested MRI, and then said, oh no she would do a injection????
She probably ment an Epidural Steroid Injection that is often used as symptom control often for herniated dics.
But I do not understand how your doctor could mix up???She needs to do an MRI first, then assess the ned for an epidural steroid injection

And, do you have a good orthopedic doctor or a Spinal/ortho doctor?
And, which doctor has been ordering the PT ? Did I see that you had used a Chiropractor? Perhaps I do not remember your post corectly. But I would not dare to go to a Chiropractor with the kind of symptoms you have.
I would suggest you assess, and see if you are satisfied with your Primary doctor or if you need another. But perhaps you could be referred to a oortho/ or a spinal/orth doctor
All the best