I went from 34W to 30W. My advice to you is to hold off as long as possible before buying replacement jeans. I got a couple pair of 32W jeans I have no use for.
I'd be extatic to hit 36, but 38 would not be bad. I've had a bit of a pot since I was a kid so I'm used to that. All my 34s are given away though. Reality finally hit and I ain't ever seein' that again.