Same here i stored my bitcoins at poloniex thinking they would participate as it was stated on Stellar website, but they really messed me up, if only i had known bittrex was going to participate
Seems there is the possibility of an extension if an exchange is willing to participate.
“We would like to distribute lumens to as many Bitcoin holders as possible, but cannot do this without the active participation of exchanges. Recognizing it is harder for exchanges to implement our giveaway than for individuals to claim lumens, we are offering a claim deadline extension to December 31, 2017 as well as limited technical assistance to exchanges that meet the following”
https://www.stellar.org/community/bitcoin-lumen-program-extension-exchanges/