All Bitcoin transactions are confirmed by the network to make sure that they really happened, meaning the Bitcoin has been moved to another address. Every single transaction, from 1 satoshi all the way to 21 million Bitcoin, will have to be confirmed by the blockchain to verify it all really did happen.

Confirmations can take a long time, as 1 confirmation is equal to one block being discovered, mostly. It also depends on whether or not your transaction was included with said block.