Am i still protected against pregnancy if ---> read on and answer please :) ill pick best answer to?

k so am i still protected say if i took my pill at 5oclock in the evening say saterday evening,,, and then go out have fun bla bla bla get drunk .. but have at say 4 or 5 not go to bed that would be 4 or 5 am the next morning but it wouldn feel like the next morning becuse never went to bed from saterday evening if ya get me so i wud have took it 12 hours from the time i did it would i still be protected.... without using any other method of contraception and then didn shower till that evening after ... the pill is yasmin ive been on it for 3 or 4 months but have always used another method i went on it to regulate bleeding between my period .. and just so i was safe if anything ever happened ... please answer any way i could get prego ...... i do always remember to take it sometimes i may be an hour or 2 late but normally im spot on time.... not to late