I am 31 and pregnant for the first time. Two days ago I had my ultrasound at 13 weeks and everything was going well until the meassured the neck. First they said itnwas 4,2 and next time they said 5mm. Inhad my blood test before which didnt show anything. They also found some liquid around the lungs. Theymsaid there is a 50% chance there is nothing. But if there is something the risk of DS is 25%. I did a CVS test and have to wait until Monday for the first result. Anyone else experienced this? I feel like I want to jump in fron of a train right now.....