Hi BG.

The dressing shouldn't be leaking otherwise why have it? Being that i can't see it myself I advise you do get it properly dressed. You can go to your pharmacy and get some dressings there. Maybe a thick pad like combine with what is called hyperfix ontop which is an adhesive tape to go over the whole site.
Having said that- its best to get it redressed and ask the.nurse/doctor to write down the products they are using so you can buy some (hopefully they Will just give you a couple). Also ask that they show you how to redo it if needed.
Your not being overly anxious. They should have showed you this stuff luv. Your doing well

Hope he heals up fast

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