Q: Hey can you help me?

You have multiple iPod's when you use Find My iPhone and you forgot which one is your?

Did you set up your iCloud account and turn on Find My Iphone on your Touch before you lost it?

You are going to have to use the old-fashioned method of retracing your steps for the day.

Call the bus company and report it.

You are not addressing Apple here. We are just users like yourself.

Typically the iClold account is the same as the Apple ID used on the device but they can be different.

Maybe by:

Is there a way to find my Apple ID Name if I can't remember it?

Yes. Visit My Apple ID and click Find your Apple ID. See Finding your Apple ID if you'd like more information.