Trouser crisis

I'm not showing yet. I think I can feel where my bump is beginning to grow, below my belly button when I'm laying down, but there's no obvious bump there.

All the same, I can't fit into any of my trousers - even the pair I've been relying on as having been a size too big pre-pregnancy would only just do up this morning and I knew I'd be seriously uncomfortable by the time I'd been sitting on the train for an hour in them. Especially if I tried to do anything adventurous - you know, eat, breathe...

So, I'm living in leggings and scouring the web for maternity trousers with nice elasticated waists and room for expansion.