Hi Shari

I've been worried too - I lost 6kgs right at the beginning because I had OHSS as a result of my IVF treatment (20 eggs at pickup!!!!) - and until about a week ago had not put on a single gram. And I'm having twins!!

I'm also not a very large person and have been hovering around 56kgs. I kind of thought that because I was slight with no extra weight that I'd show immediately - especially with two. In fact, I was preparing myself to have to tell people who see me regularly well before I would otherwise have chosen to.

But everyone is different. So please don't stress. I have a long torso, and apparently my beans are low down. At the scans they've been exactly the right size, my uterus is the right size, and my ob said weight is a really terrible indicator of whether a preg is progressing well.

Having said all that, I have popped now - and not exactly overnight - but certainly within a few days. When I stand side-on, I definitely have a swelling underneath my belly button and it is rock hard. I can't suck it in no matter how hard I try (I was just experimenting - I'm actually very pleased to finally have it!)

I think I also felt 'thicker' before I got a little bump - not that I could tell in my clothes until literally the last couple of days. I was sitting on an aeroplane on Sunday night and had to undo the top button and zipper of my favourite skinny jeans!!!

Jenx