Severe gas pain nearly two weeks after surgery

Hello everyone. I wanted to ask if anyone has experienced gas pain (or similar) nearly two weeks after surgery.

I woke up in the middle of the night with discomfort in my upper left abdomen. Went to bed and woke up hours later. I had horrific pain on my left side. It seemed to migrate, but focused in the middle of my torso up to my armpit. It closely resembled pain while breathing with a broken or bruised rib. (I have done nothing that would injure a rib) But it was excruciating. It freaked me out so badly, I went to the ER. They ran a bunch of tests and gave me X-rays. No sign of anything. All my vitals looked great. No issues in the surgical area and my urine is normal. The pain subsided a bit and I went home. The ER manager and the on-call urologist were both stumped. They didn't know what it was and said it “might be gas.” An hour later, I had another episode. I’ve never experienced pain like that. It was a 9 on a scale from 1 to 10. I suffered for about 30 minutes before it subsided a bit. But it’s always there…floating at a level 3 or 4 pain level. Really hurts when I breathe in.

I know gas pain is common after prostate removal. But I was under the assumption the surgical gas pain only lasts a few days. My surgery was March 4.

Anyone have any experience with this? My bowel habits aren’t completely back to normal, but I have been going some every day. I’m passing gas. It doesn’t feel like normal digestive gas pain because it’s so far up. I’ve also felt it in the shoulder. It moves around a bit. Again….all vital signs normal. No sign of a heart attack or pulmonary embolism. (I don’t have any of the other symptoms associated with those anyway). Doesn’t seem like heartburn because it’s not in my chest. While gas pain seems like the culprit, I really don’t know what it is.

Just curious. My follow-up with my surgeon is in two days.