I had my 20 week ultrasound today and it was revealed I have a single umbilical artery. The ultrasound tech reassured me everything else (heart, kidneys, etc) all look great. She even went as far as saying if she was worried at all, she would have the doctor come see me before we left but she said that she is nearly confident our baby will be completely healthy. We did do the blood testing for genetic disorders and those all came back normal/negative...but I still worry about normal development and weight. She also told me our baby weighed 11 oz which according to my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> is actually bigger than where they predicted(I know this is just an estimate) but I'm just trying to make the point our baby so far is gaining weight adequately. It still didn't stop me from having an emotional breakdown when I got home. Just want a healthy healthy baby and I can't help but worry!:( prayers! And does anyone have advice on this?