I agree with Dingo (above poster)- you need to relax sweetie. Stress isn't good for you (or a pregnancy, if in fact, you were pg). Since your period is only 2-3 days late (which could have been caused by a number of things), wait about 4-5 more days and take another test.
You might also think about talking to your mom or a close aunt. If your period doesn't come within the next couple of days, you should call your doctor for an appointment. Remember, doctor's can't release any information. So, if you set up the appointment, they won't blab the information to the world or to your parents. (Although, you should talk to your mom.)
I hope this helps, keep us posted and just relax. Take care.