Yestreday at my week 16 checkup the Dr measured my uterus and apparently I am measuing 18 weeks not 16. She basically said the baby will probably be larger based on the fact my bf is 6ft and was a large baby himself. But we will see at my US in 3 weeks. But could I also just be farther along than suspected too? I never had a dating US as they don't offer them in BC, so who knows right? and if I am, would that not throw off blood work I've had done since that is done during specific weeks?