Monday 25 April 2011 3.52pm
I unfortunately can't help find your iPhone, but its worth noting (and mentioning to other iPhone/iPad owners) that Apple offers a free app/service called Find My IPhone which is worth having it setup in case you misplace your device - it happens, we're all human.
Some good news however is that if you've been syncing your iPhone with iTunes regularly and allowing it backup, if you have your iPhone replaced you can restore your iPhone from your last backup and everything you had on the device (txts, emails, contacts, apps etc) will be restored to your new iPhone - including the photos and video clips you had in your Camera Roll. So if you have a recent backup of your iPhone, you should be able to restore the photos you had of your kids and memorable moments from your most recent backup.
Sorry I can't help, but good luck.