12 weeks and cramping

I've been super busy today and haven't drank a lot of water. We had a wedding to go to and left really late, but I've had cramping for the last hour. It was a sharp pinching feeling on one side. I thought it was because I was dehydrated so I looked and it said drink water and wait an hour. It's been an hour and a half and the pinching feeling is gone, but I'm still cramping all over. I'm not sure if this is still from me being dehydrated or if I need to go in.