yeah, could just be a late bloomer! I was! It took me weeks, tho it was before 18wks (not much tho). I came out of the bathroom and said "I've put on xkg!" and dh's Nan, who didn't know I hadn't put on any yet, told me " Of course! You're pregnant!" as if I didn't know that I was going to put on weight! I was annoyed at the time - pg hormones - but found if funny a few days later!