Could I be pregnant ???

Im 13 years old and im a girl, i slept with my then boyfriend on the 30th of march of this year, we where both virgins, we only did it for a few minutes, maybe about 5 or 10 minutes but we had to stop because i was bleeding too much, he said he didn't come, but he master bated abit and then he put himself inside me for another few minutes, ive been getting really scared because im getting pains in my stomach and usually around this time of the month i would get pains in my abdomen because of my period but im not sure if its my stomach or my abdomen that's sore, im really scared to take a pregnancy test, we only did it once, could i be pregnant ?????