mickey guyton performing her hit song "all-american."r abdi has that for us. ♪ we are ♪ >> reporter: overnight, country star mickey guyton performing her song "all-american" at the american music awards as her son recuperates. ♪ we are, we are ♪ >> reporter: just days ago, guyton sharing a terrifying message on twitter when her 9-month-old son grayson fell ill writing, quote, normally don't do this, but my son is being sent to the icu. the doctors don't know what's wrong. please, please pray. later adding a photo of her husband cradling her son saying, quote, he's not in the clear, but he's on the mend. thank you for your prayers. i will update y'all as soon as i'm able. guyton now says little grayson is on the mend writing on instagram that her son suffered from, quote, dehydration because of a severe stomach bug, adding, quote, he is still dehydrated and weak, and has lost weight from not being able to retain any liquid, and he is now improving. for "good morning america," mona kosar abdi, abc news, new york. ♪ all american ♪ >> mona,