Late mail?

Hi ladies. I’m not sure if this is the right page, but I wanted to see if you are familiar with USPS mailing dates. I had a large check mailed to me last Monday the 19th and have not received it yet. I know thanksgiving may have pushed it off a bit, I’m just not sure if it’s normal to be a week late for standard shipping within the same city and state. I called the place that mailed me the check and their number is disconnected (which is even scarier). Should I be uneasy? Or would you say it’s normal for it to be a week after a holiday? Thank you!!