My 25 Year Old Daughter Who Gave Birth 9 Months

my 25 year old daughter who gave birth 9 months ago, urined and she said a worm came out. She said she was feeling crampy and thought it might be her period about to start, but after she urined and a worm came out she no longer has cramps. She has no idea, nor do I, how this can happen. She said it was about 2 inches and it moved for a second in the toilet then died. We're worried