Think I'm in trouble?

[Tomm]

It is highly unlikely that any reasonable consumer ISP would allocate more then one IPv4 address. Therefore the router does not hide your "real IP" rather it makes uses of network address translation which allows multiple devices on your private network connected to your router to share the single public IP address provided by your ISP.

I googled it to look and there's a video on youtube that showed how a user sending a large file to someone to give him time to look could look at the connections via command prompt. However he mentioned its an external IP which basically shows the location and stuff roughly but its not the main one.

Remember the router hides your real IP so the IP the user has of yours is probably the ISP one.

[efq]

Don't worry too much. What did they want/ask from you by threatening you with it?