Ok, thanks Dragonslayer, but that didn't work...
I found atma's instructions here for how to get to TWRP and tried that.
I was unsure whether instructions to get to TWRP would be the same as how to get to clockwork mod recovery.
His instructions: "How to get to recovery: Power off the phone, Hold both volume buttons and the power button at the same time. When the phone vibrates, let go of the power button but keep holding both volume buttons. In a few seconds you should be in the recovery menu."