Why is my car getting no heat, engine light on.

Why is my car getting no heat, engine light on, oil light on and water coming from exhaust?
i started the car it made a loude noise under hood for about a min. Then stopped I drve itfor about 15 miles then oil light came on I turned off the car checked oil was fine, started the car drove 15 feet then engine light came on, drove about 5 miles pulled car over, smoke from under hood, put coolant back in let the air out waited for it to cool down started still no heat and noticed after car was shut off water was coming from tail pipe what is wrong please help