Hey everyone !

I am new to bitcoin i had money in bitcoin core wallet it was in process of synchronizing but still i sent bitcoin form my core wallet to my receive to payza and generated a one time key to receive bitcoin at this point i was unaware that it was for a limited time and it will get expired  in hours now as my bitcoin is fully synchronized i do not see my money in payza account and also in bitcoin core wallet is showing

Status: 0/unconfirmed, in memory pool

Don,t know what to do kindly let me know what shall i do