I've gieven lines to pregenant women....

Its their choice. My conscience would go as far as to cut her after I've seen her drink her fourth. It would be unproffessional to refuse to do your job, but, as a bartender, you have to authority to stop serving anyone at any time. I've worked at a few bars and done this more than once to pregnant women. I never liked seeing them drunk. I just tell them I'm done serving them for the night. I never made them get up and leave, but I've broken a few bottles when Mister Slick would try to sneak his knocked-up lady a drink after I cut her off.

You also have to take to note that, if you don't serve the lady, aren't they just gonna go somewhere and buy liqour or beer or go to another bar that will just think shes fat? At least I got to be responsible for them for periods of time, rather than force them to go somewhere where I have 0 say over the proceedings.