I have done something wrong in a drunken night.?

In the last Saturday i was tense about some office issues. after leaving the office i decided to drink some beer. i go to the bar and i have dunked 3 beers and 4 pags of vodaka. i was out of control. i am not in my mind. then i decided to go to my room through metro. in the metro sit in the ladies compartment . and i touche a girl who was sitting beside me. after that she was shouting on my and start saying to leave the compartment. i started saying sorry. when she doesn't agree. then i leave the compartment after abusing her and whistling on her. i think this is very bad. i have not remembered the face of the girl. but the incident is always in my mind from that day.mai bahut paresan huu. us din se mujhe apne ap se nafarat hone lagi hai. please tell me how to confess this fault.