Lost iPhone- how Find my Phone works?
If your iPhone status is green (online), it's still connected to your home WIFI. If the status is gray, it's showing you the last visible location. You can even see the time and date of that last location.

If your data plan renews today, it should setup automatically. That said, if the phone was lost whilst cycling and is still up and running, you could see the actual location (based on cellular data).

Based on this, I presume you can find it at home: Open Find My iPhone again, there is a button to make it ring.