same here...i used to play netball (rather badly) at my local club..wasn't anything serious, but i gave that up and havn't really done sport since, so im in awful shape. I would have maybe liked to have played netball for the uni...but i'm no where near good enough for that. I get out of breath running from one end of the court to the next, and all the people who play are national level players.
If everyone else who plays for the medics aren't that experienced, then maybe I might give it a go.