Am I Worrying too soon.

I purcased item  a couple of days ago with a delivery estimate of the 4th and 6th of june.

The seller has zero feedback and sold 22 of the same item i purchased in a short space of time.

I have tried to contact the seller but have had no reply from them.

I have also emailed the given contact details and nothing off them either.

Am i worrying for nothing. I just feel something is off.