Miscarriage?

I'm wondering if it's possible to have a miscarriage and not bleed?

I've had one before. But this would be super early in the pregnancy if I even was. I ask because yesterday, randomly, I got these horrible horrible cramps in my lower abdomen. So horrible I was just crying and throwing up. Last for about an hour and now every once in a while there's either a dull pain or a sharp pain. Trying to figure out what it could be.