Pains

I’m having stomach pains (sort of gas pains/tightening/menstrual cramping) and I’m not sure what they are. They don’t stop if I drink water or move around. I’d assume they were contractions but they are lasting 3-6 minutes and coming and going every 5-8 minutes. That’s lasting longer than what I heard contractions would, so I don’t know what it is. I’m also a little nauseas. Has anyone else been having this happen or have an idea on what it could be?