need info on drug testing PLEASE

I have a drug test on Thurs 2/10/05. I haven't smoked since 2/1/05 and that was only a little bud. I haven't been smoking since and I really haven't smoked much for quite awhile. I also have lost 35lbs in the last few months. I have drinking a good bit and I went and bought Q Carbo to take the day off. What do you think my chances are of passing the test? This is really important to me because I am a single mother now and I need this job badly. Any suggestions you have would be great.

Thanks,
happy98329