you should do RBF or attempt double spend with higher fee, or do CPFP if it has change to your own wallet
i heard if it is not confirmed after a week,it will go back to the sender wallet
here's one of the txs https://blockchain.info/tx/838a679dce8bc218408743fd77d8021dcc89a2a65e7d616746ee3337d66143a0
click on the receiving address and you will see 6 txs pending
it seems that bc.info kept them in mempool for indefinite period of time
I'm consolidating lots smaller unspents I received from faucets a couple years ago
and not in a hurry on getting them confirmed, so I just let them like that for the time being
I still have bitcoin balance in other addresses that I can use if I need to make payment