Nothing concerning showed up on the MRI. It does not explain your leg numbness and migraine. That said, the migraine could be due to many conditions. Could you describe your migraine in more details? Does anything trigger or worsen it?
Numbness in the leg can be caused by many conditions, as well. Some of the common causes are cervical spondylosis, lumbar spine problem, diabetes-induced peripheral neuropathy, etc.. You need to do an EMG to exclude these common causes first.