I found I put weight on after I had my first baby 2 years ago. I was sitting in the mid 60s and I was happy with that. It has been a huge struggle for me again after I gave birth to my second 10 months ago when I put no weight on in my pregnancy and lost 15kgs within a few weeks of giving birth, which is why I was tested for possible medical conditions because it was so sudden.
I'm hoping building my muscle tone will help. So far I have lost more weight because of the exercise but I've been assured it will come back once my muscles start to build up a bit.