I would recommend you get rescoped/another Upper GI Endoscopy done.
I wouldn't be freaking out, but a bit concerned.
Hi there,
I am glad to see that you are now taking the medication and cutting down on coffee and beer - that is a good start in managing your condition. It is unlikely that you should get Barrets and esopheagal cancer if you keep your GERD under control. Barrets and thus cancer normally develops if you don't take medication and continue with bad eating and drinking habbits. The lump in your throat and difficulty in swallowing are signs of uncontrolled GERD - alarms symptoms.
If you feel that even with the medication you still have alarms symptoms, you should then go for a follow-up Endoscope just to make sure that you do not develop Barrets.
When you had the scope 3 years ago, did they mention anything about having a Hiatal Hernia or a LES dysfunction?