What would you do in this situation? I’m kind of thinking to investigate myself and then tell my manager if I can’t find the number?

We have staff contacts at work and I feel that my number might’ve been leaked by a work colleague to either another colleague or to a resident. I work in a residents home. I could investigate myself from checking either on the system for the number or from the staff contacts book. I could even tell my manager but she is quite judgmental; she isn’t horrible, she’s really nice. But, I feel like I could lose my job if I show this to my manager. What are all of your thoughts…I’m not even sure if I should just leave it because this person does know where I work which gets tricky.
What would you do in this situation? I’m kind of thinking to investigate myself and then tell my manager if I can’t find the number?
What would you do in this situation? I’m kind of thinking to investigate myself and then tell my manager if I can’t find the number?
What would you do in this situation? I’m kind of thinking to investigate myself and then tell my manager if I can’t find the number?
What would you do in this situation? I’m kind of thinking to investigate myself and then tell my manager if I can’t find the number?
What would you do in this situation? I’m kind of thinking to investigate myself and then tell my manager if I can’t find the number?
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