None. I'm currently breastfeeding a 10 month old and have NO DESIRE for sex whatsoever. Course, my husband's deployed so it's better off this way.
But my best advice is fake it. Fake it until you can get into it. Pushing yourself to be more intimate even when it's the last thing you want to do might open the floodgates and allow you to enjoy what's happening and then before you know it, you'll want it to happen again and again.
Usually doing something will trigger a memory and then a physical response and your body will say, "oh yeah, I remember this.... I like this". At least, we hope.