Lower back twinges and numbness right leg and pins and needles in right foot toes .

Right sciatica: Your symptoms suggest right sciatic nerve irritation. It is commonly due to degenerative disease of spine ( osteoarthritis) and or herniated disc. Arthritis of si joint may can also cause similar symptoms as sciatic nerve travels in the vicinity. See a neurologist.

Likely all stemming : From your back. See a spine surgeon or neurologist for x-ray and MRI to be sure.

Sciatica/radiculopat: See an orthopedic surgeon who specializes in the treatment of the spine disorders. This is most likely radiculopathy (nerve pain) that is occurring due to possible arthritis/bulging or herniated discs that pinch on the root of a nerve causing pain down your leg.