Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Go to an emergency department if food is stuck and you cannot swallow liquids or your own saliva.
Drooling after food becomes lodged is a sign of complete obstruction.
Do not force down more food or drink to try to clear it, and do not induce vomiting.
Call emergency services for breathing difficulty, choking, fainting, or severe chest pain.
Seek prompt medical assessment if swallowing is steadily worsening, you have pain when swallowing, or you are losing weight without trying.
Vomiting blood, black stools, persistent vomiting, or unexplained anemia also require timely care because they are not typical features of a simple ring.
Chest pain during or after eating may come from the esophagus, but it can also have heart or lung causes that need urgent assessment.
After dilation, seek urgent help for severe or increasing chest or abdominal pain, fever, breathing difficulty, vomiting blood, or repeated vomiting.
These can be signs of a procedure complication.
Arrange a routine medical appointment if you develop new or recurring difficulty swallowing, even if food eventually passes.
Earlier assessment is also appropriate if you are avoiding foods, taking much longer to eat, or having frequent reflux symptoms.
Every sign above is quoted from the sofidex article on Lower esophageal ring. If you are not sure, err upward — it is always reasonable to be checked.