Should I just keep quiet or is there a chance I am being charged?

[2beesornot2beesthatisthehoney]

So a while ago I took out 2 subscriptions to craft magazines on my iPad
With one after a months trial I decided to get the paper version.
The digital version still arrives every month on my iPad . I don't think I am paying for it.
The other digital year subscription I took out for another magazine ran out recently I didn't renew. To my surprise I am still receiving digital copies each month. Don't think I am paying.
iTunes account states both subscriptions have expired .

Is there an email address you could contact to put your mind at rest? (or to sort it out if you are paying?) That's probably what I would do

There are some magazines where if you get the hard copy subscribed you have access to the online stuff.

You say you didn't renew but did you cancel? A lot of subscriptions automatically renew.