Is that normal? Pre-Shipment

I am from Germany - so I don't really know if this situation is normal. I am aware of thanksgiving and blackfriday, but my package is stuck for 4 days now in "pre-shipment". I ordered some cloth on Depop to ship it to Germany.

Should I contact the seller? I am afraid of scamming and all this because I live in Germany and he in US.

It says: A shipping label has been prepared for your item. A delivery date will be provided when USPS receives the package; contact the shipper or shipping partner with any inquiries.