This is a bad day

I'm sure everybody's done that thing where you're trying to upload a picture onto your iphoto, and when the computer for some reason asks if you want to replace your iphoto library, in your sleep-deprived state you say "yes" because why not? And then you immediately panic and realize that your iphoto is COMPLETELY GONE and you accidentally trashed about 200 pictures of your baby, your sister's wedding, and your brother's wedding. And you don't know how to get them back, and you're too scared to click anymore buttons because you don't want to erase anything else. Right?

UPDATE: Hooray! After the purchase of 1 external hard drive and 1 FileSalvage download, most of the pictures are back. Just so you know, if you EVER have to use FileSalvage, not only does it recover your photos, but EVERY. SINGLE. picture you have downloaded in the computer's existence. You have been warned!