I took a genetics test for downs and came out positive

I'm asking for help and guidance from all moms This is my first baby...I'm 24 .....I've never felt fear and pain like this I'm now 17 weeks pregnant and I got a call from my clinic yesterday and she tells me the test came out positive and I will have to meet for an ultrasound tomorrow along with a meeting with a specialist.... I'm heart broken and some friends tell me to take extra folic acid can this help? I love my child and i need some advice I feel so trapped in this feeling please help