Pregnancy at 16 years old. I'm afraid I might be. please read?

It definitely sounds like you are pregnant. If your cycle is 28 days, you would have probably emulated right around the time you had sex. As for the symptoms, they sound spot on with pregnancy. The blood is a big indicator, it sounds like implantation bleeding. You are probably far along enough to get a positive result with just about any brand. But, my guess is that you are pregnant.