Im only 13 and me and my boyfriend had and i began to bleed. afterwards i still was bleedin am i pregnant?

we had twice in less that a hour. i didnt bleed the first time but when we had the second time it hurted and i was bleeding. i had blood on him and me. im still having normal periods but my stomach hurts on the basis and i feel like im going to throw up. im really scared if im pregnant