Is it normal to have lost weight at 13 weeks? I hadn't weighed myself right before falling pregnant, was about a week before. I was 8st 9. At my first midwife appointment last week I was 8st 5, I thought nothing of it at the time because it was different scales. I weighed myself today on the same scales that showed 8st 9 and I'm now 8st 3? I'ts not a huge difference, but shouldn't I be putting weight on? xxx