@Kelli, Hope you're already feeling better! If not, maybe time to check in with your doctor. Are you nauseous? Sounds like your abdomen feels distended? Have you experienced an obstruction in the past? The pain and tightness you describe reminds me of partial obstruction.
if partial obstruction is suspected, Doctor might suggest clear liquids - plenty of it - for a week if you can stand it and then regular liquids. When I had a partial obstruction that didn't clear for several days my GI had me take a single dose of miralax. That resolved it. I keep it handy now, just in case.
Good luck!