Hello and hope you are doing well.
Your symptoms could be due to zenker's diverticulum, more so as it is one sided and it is present for a long duration. Angioedema is swelling of the deeper layers of the skin due to an allergic reaction. The reaction occurs more commonly on the face around the lips and near the eyes. And this is usually visible, so it is unlikely to be due to angioedema. Your symptoms can also happen due to iron deficiency anemia causing Plummer-Vinson syndrome, where there changes to the soft lining of the throat. This can be detected by a simple blood test. Discuss these options with your doctor when you happen to meet him next time.
Hope this helped and do keep us posted.
thank you so much i will look into that