When you talk to moms, particularly of the grandmother variety, they will constantly tell you how quickly the time passes. Prior to having children, you will shrug and wonder how quickly it could possibly go, maybe it goes faster for older people.
I am here to tell you that they are so right!
The day-to-day may pass slowly, but one day you will be cleaning up after your 3-year-old and find a picture of him as a newborn and you will have to steady yourself as you desperately try to remember when he was ever that small.
I, personally, think that you get lost in some kind of diaper-changing time warp.