Yes, a female bodybuilder can have kids. There is no evidence that bodybuilding has any negative effect on fertility or pregnancy. In fact, many female bodybuilders report feeling healthier and more fit during pregnancy than they did before they started bodybuilding.
Of course, as with any type of exercise, it is important to listen to your body and not overdo it. Pregnancy is not the time to try to set new personal bests in the gym. But moderate exercise like weightlifting can actually be beneficial for both mom and baby.