I am 19 years old and have had a regular period (exactly ever 27-29 days) since I was 12. I am due to get my period in 13 days, but tonight my boyfriend fingered me and there was some blood. At first I thought he had scratched me because the blood looked like blood from a cut, which is usually more red than the blood from my period, but on closer inspection it looked somewhat clot-y the way my period usually does. I am PMSing and have felt slight cramps for a day and a half so i thought i may have just gotten it early, but two hours later (without a tampon or pad) there was no trace of any blood. What is happening?