Hello! My name is Martín Malo, and I'm from Ecuador. I'm going through the exact same problem. I had a Niseen fundoplication for a hiatal hernia a little over a year ago, and the pain and how to relieve it are similar to yours. Unfortunately, to this day, no expert has been able to offer me a substantial solution. Through a pH impedance test, they concluded that it's not related to the surgery but rather an injury to the diaphragm that coincidentally occurred during or after the surgery. For this reason, they recommended Global Postural Re-education therapy, which, in general terms, seeks to improve body posture and the way I chew food. Due to time constraints, I haven't been able to focus on it as I should, but I'll leave this as a tip for you to look into. Another tip I can give you is to take Lactaid, walk for about 5 minutes after eating, and reduce or stop drinking coffee or carbonated beverages.

Today, the symptoms have decreased, so another tip I can give you is to be patient and listen to your body. If you feel like a food triggers these pains, don't eat it.

Finally, I ask that you also help me with tips and tell me a little about your experience. I don't know if you found a solution or an expert on the subject. Maybe you were able to identify a specific type or food that triggers your pain. I would greatly appreciate anything.

I wish you the best and I look forward to your response.