Just keep in mind if you do it that way than pregnancy comes out to be 10 months instead of 9. This is the chart I use to help keep it all straight!! Lol

Just for kicks, here's a 40-week comparison:

9 month pregnancy photos - renee herlocker images

33 weeks and 9 months side

I use this!

36 Weeks Fetus

36 Weeks Pregnant ~ 9 Months!

9 months weeks