Lots of things can make your feet hurt. Plantar Fasciitis is fairly common so it gets blamed even though the problem might be something completely different.
Read this page for a good definition:
Mayo ClinicThe key is this part:
Plantar fasciitis commonly causes stabbing pain that usually occurs with your first steps in the morning. As you get up and move more, the pain normally decreases, but it might return after long periods of standing or after rising from sitting.
If that doesn't fit your symptoms, you probably have a different problem.
Jerry