What does this mean?? Please help!!!

My boyfriend and I had sex about a week ago. We used the withdrawal method while wearing a condom the whole time through.

My period is late by 4 days, and I’ve been feeling slight cramps in my lower abdomen that come and go for the past 3 days now ...

Do you think this could be a sign of my period or that I’m pregnant? I don’t want to be pregnant 😭 Please help!