Replying to Chiropractor

My lower back has been hurting so I've been seeing a chiropractor. I had a x-ray done and my chiropractor says that it's a textbook compression injury in the lower back and that he sees it all of the time with skiers and snowboarders. I've been seeing him for about a month but haven't felt much improvement in my back so far. It hasn't gotten any worse though. For anyone who has had similar back pain and has seen a chiropractor, how long did it take before you started noticing an improvement. I'm just wondering if i should stick with it or maybe try PT.