Welcome to the Community @Nadinebarrett23! 
Losing a phone is never a fun experience and we want to make things as simple as possible for our customers. If you lost your phone, the first thing we suggest is to block the line. You can find all the info on how to do that via your Fido.ca account right here
That said, looking at the calls made isn't possible via the Fido app or online as you'd have to wait for the bill to be released. On our end though, we can check if any calls were made after you lost it
If you'd like us to check or want to go over options for a new phone don't hesitate to contact us or let us know and we can send you a PM here on the Community!
