period like cramps

So I've been having period like cramps the last few days. And today they are pretty mild and coming and going in like 20 minute intervals. Should I time these as contractions? I talked to my mom and she said my aunt had the same thing when she was pregnant and also denied she was in labor that it was just BH and ended up having her baby that night. All my BH have been side pains and lower abdominal not back. 39 weeks as of tomorrow btw