My Son Swallowed A Two Rupees Coin On 6th Nov,

my son swallowed a two rupees coin on 6th nov, it has been more than a week now. we have got three x rays done, and the position of the coin is not yet clear to doctors (it is not in esophagus doc says), they are not sure whether it is in stomach or colon. (doctors says) If it is in colon then it come its own, however from stomach it can be removed by endoscopy. pl. suggest