I'm 17 and my last period was November 27 and my period must be between December 25-27 but today, December 28, but still don't have signs of it. I usually have 27 days menstrual cycle and there are times 25 or 26. Actually, I have PMS last Dec. 23-25 but after that day, they disappeared. Today, i have also a clear and somewhat light blood came from down there and i thought it was already my period..what is it? Could I be pregnant? I don't have much money to take a test and i'm scared to tell my mom cause i don't want them to know my situation..