I sent some BTC from Bitcoin Core on 3rd Mar 2017 but it still shows as unconfirmed. This was my first sent transaction so I did not know much about fee which I learnt about in these past 7 days. However, th fee I sent still came out to be around 25satoshi/byte.

This is the transaction. https://www.blocktrail.com/BTC/tx/c5e40d06de10aca9f5a8f594abbf9e198c72423177a6221ae52d514cdc2a317b

Could someone please suggest how can I get this back or through? If I get it back I will send it again with higher fee.

I researched a lot and read about double spent, zapwallettx etc. but dont understand at a level I can take risk to do it.

Could anyone please help me?

Just want to bring into your notice about this interestin coin. It has th most promisin future of all the alt coins.

There's a lot goin on for this coin. It has huge infrastructure as the backup. It solves a problem which caused a loss of revenue of around $22Bn in 2015...so even a share of that will take th coin to heights. Due to th problem it solves, it will benefit hundreds of thousands of websites and millions of people.

Infrastructure is being developed for the past 6+ months.

This is the discussion link
https://bitcointalk.org/index.php?topic=1292875.0

Hope this info helps fellow investors/traders.