Re: DD swallowed a penny...wwyd?
DD did this and we had to have an xray for the reasons PP said - make sure it was in the stomach and not lodged elsewhere. We are lucky enough to have a children's urgent care that does xrays and labs so we went there. It passed within a day or two with no problems.
EDIT -- by the way, love your DD name
Faith - WOHM to DD born 10/2006 DS born 8/2011 :