If you haven't yet, I would call your OB's office and speak to the after hours answering service. The OB on call will let you know whether they think you should go to the hospital/triage. I think it's better to be safe and make sure what is causing the cramping. I know that it's common to have Braxton Hicks contractions which imitates or feels like real contractions when it's not. However, I have also heard that if it comes and goes it might actually be contractions. I am not a medical expert by any means, so I would encourage you to call your OB as soon as possible.
Please post how you are doing and what happened after you posted your initial concerns.
Contractions does the pain come and go ? Send me a message as the reply please thanks