4 month well baby

Took her in for her four month check up today. The dr didn't beleive that she is four months old already. I was even late in taking her...its almost 5. Today she weighed 12 pounds and measured 22 1/4" long. I don't think she was measured right though. She was 22" in October. I think she has grown more than that. I will have to try to measure her tomorrow. Her head is 40cm. She is in the 25th percentile for all three categories. The doctor think she is doing fine. I learned today that your body decides what type of belly button you have. Lily's belly button looked funny to me, so I asked the dr to take a look at it. He said her body is just figuring out if it is going to be an inny or an outie. It looks irritated though...but he said it is fine. Leave it alone and it will work itself out.