I menaged to retrieve my coins. Thank you all for your answers. This made me to learn a lot of things I didn't know. Case is closed 
I am very glad your BTC was returned to you. I have seen people transfer one coin to an address of another coin and never get their coins back (I don't know where they go...). You should share the method which you used to retrieve your BTC back from the unconfirmed transaction so others who have this problem can solve it as well.
Good luck and stay safe!
