When did you start nesting and what does nesting mean to you?

Taylor
I'm currently 25 weeks along, I've never been much of a cleaner, but I feel as though I'm nesting because I've began to order everything I feel ill need for the baby, rather than waiting on the shower and everything else. I've ordered a travel system, a bouncer, cloth diapers, and I've got her set on clothes for newborn - 3 months. I'm really fighting the urge to buy 3-6 or 6-9 because my husband and I are military, we are awaiting for orders on our first base. So I'm not sure if she'll need short or long sleeved items. I just feel the need to have everything I'll need. But my point in all this is when did you start nesting? & what does nesting mean to you?