I'm carrying really differently! My tummy is HUGE this time and I swear I wasn't this big til at least 35 or more wks with DD. It is pretty low too. I agree that it's probably close-together pregnancies that has made it so low. I never had a chance to strengthen my muscles much after DD, though I did manage to close the separation in my muscles before this pg. I don't know what kind of difference that would make if any?? The physio also said that my tummy muscles a fairly strong, though I don't really think so!!