Guys I am in a really awkward situation.

Forks are a really new thing for me.
Everyone told me to take control of the coins before the fork, then, I sent all the BTCs on bittrex exchange to my android bitcoin wallet.
Now the exchange made all the work and I am with the trouble of claim the BCC tokens.
The backup of the bitcoin wallet is not compatible with the BCC wallet or I am not getting what need to be done.
Can someone help me please?