Duke nuke forever the hive, im @ the bit where the girl's start crying bout being pregnant lol?

there's a room with three blue and purple chambers, you get attacked by a octopus, i've killed that, but i keep on going around in circlles, back to the top level and down to the bottom level again, there's no where to go, this is seriously the most annoying level in the game and i am stuck lol, is there a way you can access point, that can't be entered lol