Nope, you're fine. No baths or hot tubs. Swimming is okay in chlorinated pools or the ocean (I guess because of the levels of salt?) but not in rivers or lakes, etc. Maybe someone else knows about the ocean thing because sometimes I'm not too sure about the cleanliness there either. If I swim, and it's not often, I keep to pools and then only in ones where I don't see babies in the water. I'm just not trustfull enough of those baby swim diapers!
I am on PD and the only time i was told NOT to shower was while my tube was healing, now, i shower daily. I was told Swimming was fine ONLY in Private Pools. Was told to stay out water that i could not see the bottom (cuz they were dirty i guess)
(But there are still some that insists on swimming in the beach and i havent heard them complain)
When i do shower, i do not cover my site with anything but once i get out of the pool i make sure to shower and wash my site with antibacterial soap. Hope this helps