taking drugs in the first trimester

Im 19 years old and partied Alot drinking and taking
Drugs, ofcourse I didn't know
I was pregnant but with in the first four weeks took quite a few drugs
From ecstasy to ice (terrible I know) bad crowd, in some
Ways I see this as a blessing
That has lead me away from that life. My nuchal scan results came back and I have a 1 in 84 chance of a chromosomal abnormality could this be because of the drugs in the first trimester. I am really worried these results are because of my stupidity although not knowing. I gave up smoking the day I found out I would never want to harm my baby in such a selfish way

Maybe, maybe not. THere is really no way of knowing what could have given you a result like that. But look at them this way - there are 83 chances that your baby will be just fine.