my child has been potty trained for about a year, and has NEVER had a poop accident since the first time she poo'd on the potty....that is, until the last 2 weeks!  She has now had poop accidents 4 times!  And i'm not talking about tiny accidents or diarrhea, just regular poops.  She has even gotten up to go potty, saying she has to poop, gets off the potty saying she didn't need to go, then goes directly to the play room where i can hear her strain and poo in her pants there.  SO frustrating.  I don't understand why this is happening and how to stop it.