so i had unprotected sex January 6 with someone and we used the pullout method(STUPID OF ME I KNOW) i wasn’t on my fertile week or anything so i wasn’t too worried, yesterday January 9 i started bleeding lightly and i thought it was my period but today it’s still light & i’m kind of worried. My blood color is bright red & i’ve had small cramps (normal) & backpains (normal), could i be pregnant?