what should i do?

hi everyone,

i ordered something on january 4th, on tuesday (the 7th) i asked when the seller would ship and got no response until the next day when they printed the label and said they dropped it off. it’s now been 5 days and the tracking still says the label has been created but usps has not received the item.

is this normal? i feel like i’m just being impatient but i’ve never had an issue like this before and mercari gave me the option to cancel on the 11th, the seller has mixed reviews on shipping. i’m really not sure what to do, i assume i message the seller but i have no idea what to say.