I’m not sure what dose you are on and how long/often you have been taking it, but even if you are on a low dose (250 mg) and taking it every other day or more it will still definitely be in your system. If you are taking a larger dose and taking it daily, your going to be in for a really unpleasant experience if you decide to drink.
Edit...I read your post from a 3 days ago...the day you started Antabuse. If you have taken it for the last three days, even at a low dose, DO NOT DRINK! I take it and have read a lot about it. The best case scenario if you do drink right now is that your heart rate will go through the roof and your face will feel like it’s on fire, and probably vomiting. Worst case...you could die.