Question about olden times?

Has any one ever seen that show Deadwood? Its like a little western town, its a show on HBO...ok well they have Saloon's on there, alot of western movies/shows do, and in these Saloons are hookers...Well, I'm sure they didn't have condoms or birth control back then or got there tubes tied? How did they keep from getting pregnent...weird question I know but this is just outta curiousity lol