Water Aerobics????
I didn't have a drain tube, so I don't know about that one.
One of mine was healed almost the same week as surgery. It held together really well. Then the really small one after about 2 weeks, another at about a month. The other 2 were stubborn and didn't heal till about 7 weeks. I'm a little over 2 months now and 2 are still a bit scabby, but nothing where they get overly soft and open up when wet. More like dried surface skin. Some people's take much longer though.