I'm sixteen years old, I get my period the beginning of each month, 3 weeks ago I had unprotected sex.
And now I'm having a weird brown spotting, what does this mean? Does this count as my period?
Is it because I don't have enough fluids in me?
Answer ASAP please and thank you

Brown blood is usually old blood, blood that's been in your system for a while, and it's your body cleaning itself out.

This link explains it far better than I can.

http://www.google.ca/url?sa=t&rct=j&q=brown%20discharge&source=web&cd=1&cad=rja&sqi=2&ved=0CC0QFjAA&url=http%3A%2F%2Fwww.momswhothink.com%2Fwomens-health%2Fbrown-vaginal-discharge.html&ei=_hvJUKTnM9HciQLcyYDgDw&usg=AFQjCNGjPzdFqUdKBr0-axKdkQhZ_43r5w

Is your period late? If so, a pregnancy test is in order.

It was just about on time, but it's just brown, and it's only during the day not at night I put on a panty liner and there's just a little in it every day. But thank you I'll look at the link