Does drinking water help paracetamol overdoes?

Patient: I had 30 paracetamol tablets. 10 tablets on 01 of October 2014 around 10.00pm and 20 tablets on 02 October early morning. (around 2.00am). still i did not admitted to a hospital. but I drank lots of water and had Domperon 10mg and Pantodac 40mg and Graviscon. I vomited 6 times. still no any other symptoms. does drinking lot of water help paracetamol overdoes? pls advice me what to do.

Symptoms: Vomiting, little sleepiness