Just wondering what you say when people ask how old is your LO. In the beginning we were doing weeks, but the weeks do not translate into months exactly. My husband now does it by months based on the day she was born. She was born April 13, so he calculates from the 13th of one month to the 13th to the next. How do you guys calculate? I am trying to figure out how old she is...4.5 months? According to the weeks, she is 5 months!