I had a drug test and I'm frightened to fail it

Did you do drugs recently? What kind? What kind of test?

We can't help you if you don't give us enough information.

I had a drug test and I'm frightened to fail it

Being you have already had it... means you are going to find out. If you have something to fear or not all depends on if you were continuing to abuse substances you were supposed to refrain from.

I've been subject to random workplace testing... due to my job for over 30 years. I never worried in all that time because I don't abuse any substances.

If you were using drugs were you "frightened" then. Put your priorities in order.