The amazing growing belly!

I thought I'd post a few pics showing the progress of this crazy belly of mine. I am 18 weeks pregnant but the docs estimate I probably measure around 29 weeks or so. Most women with triplets consistently measure 10-14 weeks ahead because of course there are 3 times the baby in there. My OBGYN expects for me to have a full term 40 week belly at just 24 weeks pregnant. So in just 6 weeks I'll be "full term"- lol. Then the fun really begins! The funny thing is although my belly has grown and grown I haven't yet gained any weight. So I guess I must be getting smaller somewhere else. I wonder where??? The first pic was taken at 4 weeks pregnant- the day we found out! The next 3 were taken at 12 weeks, 16 weeks, and 18 weeks respectively.