Has anyone had one of these? I went natural child birth with my other 4 children, (well they did dope me up when I was screaming so much that other moms were getting scared. But tell me... does it hurt to get one? does it make you sick, how does the contractions feel with an epidural. Are they gone? Are they just dulled so you don't scream as loud? So anyone who has had one in the past please share. I don't want to scream like a truck driver with this one.