THANK YOU SO MUCH FOR RESPONSE!!!

After loading ltc core I found about 2,5 LTC on that wallet. Actually, I completely forgot I also had LTC wallet in that time.
I assume that the rest of the balance (13.8ltc) I exchanged for btc and lost with btc-e closure, what a shame...but still. Without you I'd never even think about ltc possibility. So once again, thank you so so much!

Hi guys, I searched here a lot here but, unfortunately, I didn't find a particular answer to my question.

So recently I found my 4 years old btc wallet. I opened it in btc core - my balance is 0 btc but I show about 10 btc in 5 unconfirmed transactions (receiving). That got my attention.

All transactions are dated back to 2014 and their status is "0/unconfirmed, not in memory pool". I tried to find something on bitcoin block explorer but I:
Couldn't find any of the transactions ID.
Detail of sender address shows 0 in total amount of his transactions (all 5 trans. were send from 1KLm3Br6AbxGT2qNReAzrosj8wzLY2xZrU).
And most importantly I couldn't find MY OWN btc address. Btc core show me a surprisingly short address (3QJmnh) - could that be the actual problem?

After btc fall in early 2014 I quickly lost my interest in btc so I have no idea if there is the possibility of recovering unconfirmed btc, especially from the side of payment receiver. If it helps I attach details of one of the payments. Thank you so much for the answers.

Status: 0/unconfirmed, not in memory pool
Date: 08.02.2014 18:29
Credit: 3.30410300 BTC
Net amount: +3.30410300 BTC
Transaction ID: aa7152d350e5240ecc066e185d8f70e9563862cb1b5fd6838e9a86c07f7d2042
Transaction total size: 225 bytes
Output index: 1