I had some pine needles+bugs stuck in my shoe from a walk in the woods. I shook them out, but now the top of my big toe has been numb for 48 hrs. (?)

See a doctor. The best thing would be to see a doctor.
Probable not. Related. Numb big toe can happen if your shoe compressed a nerve. Give it a few days . Wear a sandal for a week. If this persists see your dr.