Barbas is a large gray hunting dog found along the road outside Falkreath. He is Clavicus Vile's companion, a supernatural creature that usually takes the form of a dog. Barbas cannot be harmed during the course of gameplay, except by the Rueful Axe.
Um if sex can't cause a miscarriage neither can masturbation. I mean your not sticking a coat hanger or razor blades up there... I'm sorry about your miscarriage and get you're grasping at straws but you didn't do anything to cause it and if you're going to have one now there's not anything you can do to prevent it.
Although many couples worry that sex during pregnancy will cause a miscarriage, sex isn't generally a concern. Most miscarriages occur because the fetus isn't developing normally. Your developing baby is protected by the amniotic fluid in your uterus, as well as the strong muscles of the uterus itself.