A question about whipped cream?!
Answers: If the expiry on the container says for example 29th Dec and i have whipped it and not used it - is ik ok to eat a couple of days later (i added icing sugar just in case this matters)? I whipped it 2 days ago - looks ok.
You're good to go, it's fine.
the expiry date on food is usually on the conservative side, therefore if it was kept really cool, it's probably good. you can tell by just tasting a very small amount.
Most dated foods read "best before" and are entirely usable after the date marked. In the case of whipping cream a few days passed the best before date won't mean much, as long as its been keep cold. However, after whipping, it won't stay "whipped" for to long you'll notice in returns to a liquid like state after some time.
Google "whipped cream canister" there the best for keeping whipped cream.