I placed an order with him on Tuesday and as of right now it's still in the processing stage. On his page it says it usually ships out the same day if ordered before 2PM, which I did.
Should I send him a message about this? Maybe he forgot to mark it as shipped?
Sure, message him. He is very friendly. He is also very busy as of late though, so he may not reply. It is probably on its way to you. I have NEVER waited more than 4 days total for a pack from him.