Already One Month

My perfect daughter is already a month old! Where, oh where did that time go?!?! I just blinked and now she is smiling at me and learning to lift her head off of my shoulder. We went to the doctor on Monday this week and she has gained one pound, 6 ounces since our last visit. Anna is up to 9 pounds, 12 ounces and 22 inches long. Everyone says she still looks little but she seems huge to me. Way too big to be my newborn. I put her in a very cute onsie and pants yesterday to go shopping and the outfit was almost too small for her!! This is the same outfit that I put her in to go to the doctor for the first time just last month! She is starting to fill out some of the 3 month outfits that I have for her and leave behind her newborn stuff. While I am estatic that she is healthy and growing at a normal pace, I am sad that she will very soon want to pull away from me and start to explore things. I know I'm getting ahead of myself and she will need me for many more years to come, but how quickly are those years going to go by? I would swear to myself that it was just yesterday I was jumping up and down and hugging Matt so tight I think he thought I was trying to strangle him because we had just found out I was pregnant. And now I have this amazing little work of living art and she is sprouting up before my very eyes.
How on earth do mothers deal with this???