Severe Abdominal Pain After Eating - Seeking Advice

Hi, first time posting, new here.... Was just curious if anyone else experienced similar issues to what I'm having. For the past 4 years now, I have been experiencing severe abdominal pain (no nausea) after eating to the point of regurgitation in order to relieve the severe pain. The longer I hold it down, it still comes up my esophagus on its own, and if I force myself to keep it down, it can cause stomach pain for days. I have been cleared by a therapist and psychiatrist that it is not bulimia or anorexia, and I have been to several specialists who have run tests after tests and found no problems yet. I've lost about 50-60 lbs over the last 4 years, but luckily, the weight has stabilized at a healthy weight despite the never-ending vomiting. Things to Note: I never had any serious problems with my weight and never considered an eating disorder. This started randomly out of the blue one day after I got severe pain after eating and hasn't stopped since. No nausea Tests I've had done: Stomach Emptying Test Upper Endoscopy CT w and w/o contrast Heart Monitor X-Rays Diet monitoring and tests Medications Aaaand nothing works. Does anyone else ever (or still) experience the same?