It hurt, but the good thing is it only lasted about 5 seconds. Cleaning? Yes. If you can take it out and clean it daily. If not use some sort of cleansing cloth to clean the outside and inside surfaces of the piercing.
This is one of the few pictures that actually shows it I guess? My jewelry isn’t very big or showy so it’s hard to see in a lot of pictures. I haven’t thought about stretching my Medusa, but my ears are stretched, so I can only assume it’s similar process? But to be on the safe side, you should speak to someone who has more experience in the actual stretching process of the Medusa (I’m not sure on the actual name, but I know there is one). And of course! Any time.