It's happening here at work too! Tomorrow is one girl's last day. Another is due at the end of the month. One is due in October, and we just found out another is due in February. I can't even tell my mom because she'll want to try and catch it too!
I say that there are 2 more married and not preggers girls here and one of the guys is getting married in November, so I expect them all to go first. I prefer the ring before the carriage for me.