After stretching sessions Friday evening and Saturday morning, both my
Better to see the doctor at the earliest...
From what I read, you developed numbness of left side limbs almost suddenly. You also seem to be finding difficulty to walk. This may or may not be due to stretching. However it is important to check for structural and vascular defects in the brain. A CT / MRI scan of the brain is recommended.
Accordingly, in my opinion you shouldn't be waiting until tomorrow. See a doctor today and almost immediately.
Hope this helps. Let me know if you need clarifications.