Working out after baby

When can you start working out after baby? I'm due any day and I want to try and get my body back to normal as soon as possible. I usually don't have a problem with loosing weight, I just want to get toned. I know some of you will be like take your time and don't rush but I got a ton of stretch marks and getting toned again will make me feel better about myself. I hate the stretch marks but there's nothing I can do about them so I want to do other things to bring my self confidence up.