Yeowch! Stretching from 14 to 10 was painful enough for me. Just make sure you're ready to keep those holes for life. 2/0 gauge is often said to be the "point of no return". I'm sure it would shrink but I don't think it would ever go back to 18 gauge.

The vertical labret looks awesome, btw! Ibuprofen will help loads with the swelling.