Once an order says "Shipped" it means a label has been created, your order has been packaged, and it is awaiting pick up from the designated shipping carrier.
Depending on which shipping carrier is used the trucks sometimes only come a few times a day. So there could be a chance that, depending on when your order was placed, even if it says "shipped" it may miss the truck. We really have no control over when shipping carriers arrive and depart. Once they are loaded and unloaded the rest is on them. They are supposed to be here at designated times but things can happen. If it does miss a truck or one never shows up, or there isn't room, it will stay at our facility and be loaded on the next available truck from the shipping supplier.
Jason