Cramps for 5 days straight

I’ve been having cramps for this whole week but they’re a lot more mild than period cramps. I had unprotected sex during ovulation bc I missed 2 pills, and now my body just feels weak. I took a pregnancy test everyday this week and they come out negative, I’m supposed to get my period in 3 days. Could I be pregnant? The cramps last all day but are mild throughout the day even in the mornings