Running those numbers, thats 6% in 3 months, which is an acceptable amount. Its common to lose in the first tri, it really just depends on how much as to whether its a problem. It should do an about face now and start going back up and you will be longing for the days of 79kgs! LOL.

Oddly though, I still weight less than pre-pregancy and yet still feel like I need a crane to help me get off the sofa.