Go to the hospital immediately to be monitored. This is no joke! People have died from drowning from having water in their lungs, hours after being out of the water, thinking they were fine. This is no joke!! I just saw a case like this on the news about a week or so ago, about a man who fell out of his boat and saved himself from drowning and went home that night, thinking he was ok and died the next day from having water in his lungs and it's considered drowning. Seek medical attention ASAP!!!