Sciatic Pain

I have just visited the chiropractor for the first time. I am experiencing pain and pins and needles down my leg and in my foot.
The staight ahead X-ray showed a slight curvature to the right along the L-4, L5 area. He assured me he could correct my pain within 3 weeks. Do you think I should go to another doctor and get an MRI before letting him manipulate my spine?After todays session I don’t feel any relief. When I questioned him about not being able to determine definetly the extent of the damage with a standard X-ray he became upset.