AM I PREGNANT 1day period

Z

So I got my "period" on the 20th , 1day early, and it was so light I forgot to wear a tampon in 2 nights in a row and no blood, also i had basically no blood on the 2nd day and none on the 3rd i didn't even wear a tampon today. Am I pregnant I don't know. I have 3 noticed pimples and I got cramps but it could be just my period changing it up?