I am on birth control and have been for almost a year.I had surgery on my shoulder the week I had my last period. It didn't last very long. I am supposed to get my period again in one week. But I've been experiencing brown discharge for 2 days. What could this mean?

If I did cociane like 3wks ago is that going to come up in a hiar folicial test if so how do I clean my hair so it want

How do I pass a hair folical test if I did a little bit of cociane 3wks ago