Is there a chance? Yes. Would it be from drinking or taking drugs? Maybe. Maybe it would have happened anyway. Chances are, you'll never know.
But
what are the chances that something's wrong, since you stopped as soon as you found out? Very slim.
And what will dwelling over it solve? Absolutely nothing. You're punishing yourself over something you can't fix, and there's no reason for it. The only thing you could do is to stop the behavior, and you've done that already.
Your doctor will probably schedule another ultrasound around 18-22 weeks, depending on your insurance.