Wife don't want have sex with me.

Dude she is exhausted and needs a break. You want her to be a lover to you, let her take a nap, you take care of the little rugrat for while, let him or her peel your brain apart lol. But in all honesty, give her time and take care of your baby, even something as simple as carrying the baby while she takes a short nap helps. Tell her she is beautiful just the way she is, tell her she is doing a great job as a mum, tell her she is making so many sacrifices for your little family and once in a while give her a leg, feet and back massage. Ladies do not feel pretty or beautiful after delivery and when taking care of baby, we just have our hair all over the place, eyebags and no smile on our face. We always feel we not doing enough and always failing as a mum and we also ache all over. When you do these simple things it will give her so much joy. Never ask if she needs help because she will say it is okay. Just do it