4:30am Wake up

This morning at around 4:30am, we got violently woken up from a peaceful sleep by Leche howling as if someone was slitting his throat with pain. It seemed as if he was being bugged by his tummy or something and he got cramps. He would be fine for about 20 min and then all of a sudden he would howl again and cant sit down or lay down. I was worried naturally about him, but after he went to the vet this morning, we got told that he had a pinched nerve in his back, or some sort of spinal nerve injury. He got a muscle relaxant and seems ok now. It will take a few days for it to be healed. The poor little thing is already so tiny and thin coz he is not eating, and now this.