Manager currently looking at my resume. Employed there for 3 years.

Title says it all. I’ve been working at my firm for about 3 years. Haven’t been performing as well as I should be for a couple of months. Performance reviews are coming up. My manager didn’t ask for my resume explicitly but I think she accidentally forgot to leave it out of her email when she was taking a screenshot of something else work related. Should I start looking for another job now?