Should I go to the ER?

I’m 7W5D pregnant. Woke up at 12am with what felt like mild period cramps, but deeper. Cramps got worse over 15 minutes and felt like bad period cramps. Stopped for a few minutes and came back.

I’m not bleeding, but I am worried because it felt like the cramps were pretty deep. My doctor’s office is closed because it’s past midnight so I can’t call for advice.

Should I go to the ER?

Cramps have decreased to a mild/intermittent pain now.