With a vaginal delivery, if you choose a spinal block do you still have two catheters?

One in your back and one in your uretha? I want to try to have a natural birth but I'm sure I'll be screaming for the epidural at some point. I was told with spinal blocks there are no catheters that remain in your spine/back like an epidural. But the main thing is I don't want one in my uretha, I hate the feeling of them after surgerys I've had...and if they do put a catheter down there when do they take them out?