Low sex drive.

So my husband and I have been together for about 7 years now and married since August. We used to have sex everyday and I enjoyed it. As soon as we had our first baby in 2011 my Lobito has gone way way down. I could literally go months without it and not mind. Obviously being a man he needs and wants it more. He's very understanding and is willing to do anything to help pleasure me and puts my needs first. Just wish I had that drive again. Any suggestions on how to get it back?