What you were doing online is being watched. It is being recorded. Right now, some ISPs will will protect your identity and send warnings to you, to a point. Some ISPs will just give up your information.

They are currently working on legislation to force ISPs just shut you off If piracy is reported.

Right now, for every ISP that I'm aware of in the US, No action is actually taken against you for reports of piracy. But that doesn't mean that this will stay the same, or, that they won't retroactively go on a witch hunt.

You can find VPNs for a couple bucks a month. Make it a birthday request.