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Based on your history it sounds that you may have a dime stuck between back of throat to esophagus
I think you had better get to ER as if this might include your esophagus then you have a major problem on your hands ...
It is true that it MIGHT pass without harm but evaluation NOW is advised to you !!
I hope that this is helpful for you
Let me know if you have further questions or concerns
I Will be happy to get back with you
Anthony Bray MD