so.. i dint find out i was pg untill 13weeks and have been told i cant sceen for down syndrome via ultrsound now as im 14 weeks and they only do it till 13 weeks. firstly i would like to know if this is true. i do not like the idea of CVS or amniocentesis becoz of risk of misscarige and i have heard blood test arent all that acurate as they have false positives and They aren't as good at detecting babies with Down syndrome as first trimester tests. im still unsure if its worth testing as im 22 and my doctor told me it not as important becoz of my age there is only 1 in 2000 chance. i guss im just looking for more information and oppionons on the tests.