Brief Answer:
Most likely its sciatica my dear friend.

Detailed Answer:
Hello my dear patient,
Hope you are doing fine.
Thanks for follow up.
I have gone through report of X ray my dear patient.

See your report is suggestive of arthtropathy which means that mild to moderate inflammation is seen in between few spines and their junction's.Facet joint arthropathy refers to a degenerative disease that affects the joints of the spine and the disintegration of cartilage on those joints.

Our spinal cord is a large bundle of nerve fibre's which passes through a rod like hollow cavity formed by a number of spinal bones(spines).Problem with X-ray is that it can not detect inflammation is soft tissues or nerves.An x ray can only detect problem with a part containing calcium(like your spine bone).
As there is inflammation in bones of spine most likely a part of nerve can also be involved i.e there are chances that a particular segment of nerve is also either compressed in between spinal bones or it may be herniating.

The only test(gold standard) available to detect this herniation or compression is MRI spine nd this should be done asap to rule out possibilities of sciatica.
The leg pain you are experiencing is most like Sciatica.At the end of spinal cord a nerve named sciatic nerve arises which innervates our lower legs and soles.Pain radiating along the sciatic nerve, which runs down one or both legs from the lower back is termed as sciatica and is due to either compression or herniation of nerve fibre's.

Once detected treatment with
Anti inflammatory and nerve analgesics like pregabalin 75 mg would be started with methylcobalamine 1500mcg for 3 months initially.
There after proper physiotherapy have to be taken by you under a physiotherapist.
A serum calcium and vitamin D test should also be done.
Please don't panic.
Its treatable and well controllable.

Follow ups are most welcome.

Wish you a very happy and early recovery my dear.

Warm regards.

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