I guess the transaction isnt replaceable. Do you see a "Child Pays For Parent"? You might have to export the private key, sign the transaction with a higher fee, and rebroadcast it (aka double spending). Otherwise you would have to wait until it is dropped out of the mempool.
is there a step by step explanation on how to do this for someone who has no idea what theyre doing?
Ok,save your dat file.It is here when you enable Show Hidden Folders:
C:\Users\yourpcname\AppData\Roaming\bitcoin
Now download the new version from here,select your OS.
https://bitcoin.org/en/download
Run it until it is caught up to date,if your wallet addy & info is not there,exit the wallet then go & paste your dat file over where the old one was,restart BTC wallet,violia!!!
BTW,save that dat file in several places (flashdrives,old HDDs kept offline,a PC/laptop that does not go online),IT IS YOUR ONLY WAY TO RECOVER YOUR WALLET.............
Once sent you cannot resend or retrieve a transaction,it is done good or bad there is NO reversing.So be damn sure of the addy your sending to (Triple check & check again)............main reason bitcoin will never replace credit cards.........