Quick strong cramps 5 weeks pregnant?

Paige

Anyone else had strong cramps? I’ve had it happen twice. A few days apart. They only last 30-45 seconds but they hurt like a strong period cramp. I miscarried in October and never had cramps at all. I’m thinking it could be gas but having a previous loss it makes me nervous. Normal? Have you experienced it? Causes? I’ve looked it up and you read all kinds of different things.