My 1 Year Old Just Swallowed Clorox As For The

My 1 year old just swallowed clorox as for the amount i have no idea. I wasnt near him when ot happened. He immediately vomited out but it looked like quit a bit. I called poison control they said give him water. Would he be okay??
If he doesnt want to drink or eat should i be concerned?? What should i do??