I got a tooth pulled a week ago, it was healing, there was formation over it, but this morning the akin came off and now its an open hole. Dry socket?

Unlikely. At one week past an extraction, and without the occurrence of severe pain, it's unlikely you have a dry socket. Having said that, part of routine aftercare is a follow-up visit to your dentist. This is your dentist's responsibility and usually without charge. Call and have him\her take a look.
Possibly. It's worth a contact with the dentist - perhaps they'll invite you in for a look-see. Perhaps a good photo of the hole can let them decide if you need to come in. But do call to ask. Best wishes!