I had an emergency c-section 10 days ago, I didn't have an epidural I was knocked completely out but my lower back is numb to the touch, is this normal?
It could be. Your body gets all wonked out for a while after major surgery under general anesthetic. If you're not feeling right by your next appointment talk to your doc about it.
My right buttock was numb to the touch for a couple of months after my last one but I got the spinal so I put it down to that. I'd mention it to your health visitor/midwife/doctor next time you see them.