Quote from: Bobflob6 on January 15, 2018, 03:23:38 PM

Others I've asked so far said to just "wait it out" by letting the mempool forget it.

If it doesn't exist, it's out of mempool already.

Quote from: Bobflob6 on January 15, 2018, 03:42:56 PM

Doing some research on my own i found on https://blockchain.info/address/1Ha2fXwmpQn84kwYc4oqsjXj8irdEHiWRD that 0.01 BTC was sent to a wallet, from my wallet, that I've never seen or own. This may be contributing to why my current tx is not clearing since this transaction would leave me having a balance insufficient to fund the recent transaction I'm currently attempting.

It seems your transaction somehow got double spent, and only one of them can get confirmed.

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This transaction does not appear in my BTC Core wallet either, and the last transaction my wallet displays was one that I've personally sent and confirmed.

This is weird. I suggest to backup your wallet.dat, and start Bitcoin Core with command line options -zapwallettxes and -rescan. This removes all unconfirms transactions and reloads all confirmed transactions that belong to the addresses in your wallet.

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So does this mean my wallet has been compromised?

Maybe. But what thief steals only a part of your coins?
Have you ever exported your private key? Can the transaction have been made from another wallet with the same address?