With my first, I started to show a bit at about 4.5 months, but I didn't HAVE to wear maternity pants for another month...I was also 17...my #2...I started to pooch out a bit at around 2.5 months, and had to switch over to maternity pants at about 4 months...at the rate I'm going, I should start wearing maternity pants now, before we get preggers with #3[img]smileys/smiley36.gif[/img]