Going into a bar under 21?

ok so i went to this strip club / bar tonight. im only 19. i didnt realize i had to be 21 until i walked in, but there was no bouncer, so i just took a seat. nobody carded me, and i ended up getting a lap dance, and left. what i want to know is could i have gotten in serious trouble for that?? i had no intent of buying alchohol, i was only there to get a lap dance. if somebody carded me and found out i was 19, would they kick me out or even call the cops??? if i told them i only wanted a lap dance and then i'd leave, do you think they would let me slide???