The 1st sign that I had was that my HCG level just 10 days after my missed period indicated that I had the levels of a woman who was 9 weeks.... when I was only roughly 4 weeks. I had the vaginal ultrasound two weeks later and the twins showed up as plain as day! Now here I am 15weeks & 2days out and I CAN'T WAIT to meet my little Thing1 & Thing2!!!View Thread