The reason for the unconfirmed transaction is your terribly low fee. 19 Satoshi per byte is definitely not sufficient for such a transaction. The fastest and most economical is around 480 Satoshi per byte. In future, I would recommend that you use a higher fee. However, I too do see an increase in transaction fees. In 2014, it was a much smaller value. Such a volatile increase is not efficient.
Try being more careful next time, and don't worry about your bitcoins, worst case scenario: your transaction doesn't get confirmed after a week or 2 and you'll get them back in your wallet. Also you can try pushing the transaction but idk for 19 satoshi you should try contacting miners or something.
i think its happen to every one and it seems they can learn from their mistake and not using the small fees but they used minimal fees or above to send the bitcoin amount. i still believe that bitcoin can be a ways for our success but we need to do step by step and continue until we can reach our goals.