Could this breathing "constriction" be caused from this even tho my acid reflux symtoms have gone?
It's not unusual for reflux to cause a feeling of something stuck in your throat and some asthma-like shortness of breath. Both are the result of the acid from you digestive system irritating the lining of your esophagus. The irritated areas get inflamed (causing the lump feeling).
It can take 2-3 months for the damage from acid reflux to heal completely so the fact that your symptoms are gone doesn't mean that your esophagus is completely healed. It will take some time for all of the symptoms to go away so try to be patient and give your body a chance to heal.