Your calls should be worth around $2.50 at the open (If YHOO stock opens at $34.00). If you bought a month ago (when the stock was at $32.00), I guess you paid around $2.00 for your calls. It means that you are making very little money now (around 25%), but at least, you are not losing everything, like it was the case as of yesterday.
Advice: SELLLLLLLLLLLLLLLLLLLLLLLLLLLL everything at the open, don't take anymore chance. You were lucky!