i too get mine from babycentre have been since my 2nd son who is now 2.
i have found others that aren't too bad. links are:
16 Weeks Pregnant - 3D Pregnancy Calendar
Pregnancy progress - How many weeks pregnant am I? - just have to change the due date.
hope this helps.

i remember chatting to you when u were ttc mason. congrats on #2 are you going to find out the sex.