Trapped gas?

Hey everyone. I just delivered my 4th baby a week ago via c-section. My other kids were born vaginally so this has been a hell of week of recovery. I’m not sure if what I’m experiencing is trapped gas or something more. I have this pain in my upper abdomen and upper back. I feel the need to pass gas and burp, but even when I do there’s no relief. I’ve been taking gas x and stool softener and about to add acid reflux medicine to the mix. Last night the pain was so bad I felt like throwing up but nothing would come out. Im now to the point where I’m scared to eat bc I’m scared of the pain.