Thanks, Aqua. I find it very noticable... I noticed it a few days ago, but thought I was being paranoid... then my neighbour said she thought it seemed small... I've been meaning to post a pic for a few days but today I woke up and my belly button was an innie again(!!!) and I felt tiny - like my bump had just gone!
I'm not gonna go in and get checked out because it would cost £40 by taxi and we can't afford it... baby is moving so we're assuming it's okay... will definately ask my midwife at my next antenatal, though!