Any way to relieve built up gas? Last night I woke up with pain so bad I thought I may need to go to…

Any way to relieve built up gas? Last night I woke up with pain so bad I thought I may need to go to the ER to be safe. Lasted for a few hours. Eventually it went away after a ton of late night walking around and many trips to the bathroom. But id rather not get to that point again. It felt awful. It was like from my gut all the way to my ribs was a balloon ready to bust and I could barely stand up. It was tight and my hurt to move or lay any way. I hadn't eaten anything funny or out of the norm, so I'm pretty sure my diet wasn't the problem, and Its worse at night.