maternit21

so I went to Burlington Vermont (I'm almost 3 hours from there) to do the maternit21 blood test. I waited 10 for the results and got a call yesterday that there wasn't enough fetal dna in my blood. I was already annoyed and stressed out bc they just keep telling me different things. I told them I wouldn't care if my baby came out with down or something else but they insist on wanting to know. so I said okay where do I go from here. my job is very strict and it's hard for me to take days off if I miss a 10 hour day I have to make up that 10 hours during the rest of the week. so they said I could either come in for another blood test but that could also come back inconclusive or I could come in for an amnio.. I've been debating on the amnio because the chances scare me. Have any of you been through something similar???