My wife don't put out... what do I??? should I leave?

I've been with my wife for just over 2 years. married for 1. We have a 7 month old son and I have no complaints at all about the marrige other than the fact that she doesnt like to have . like never... she thinks I'm being pushy if I want it more than once every 2 months. I'm 26 and shes 20 so I dont get it. she says some **** like it makes her feel uncomfortable. I tell her that shes stipping me of my manhood and that I would leave her if it doesnt change. am I takeing it too far??? please help.. I love my wife and dont want to leave her for something stupid but I will if I have to. thanks