Can your girlfriend get you fired?

Last week my ex girlfriend told me she was pregnant, and the baby is mine. Because I have been sleeping with her lately, if she is pregnant I do believe the baby is mine. But I cut off all contact with her because of her crazy addiction to cocaine and hydrocodone. So because I refuse to see her, she has been calling my job (I work as a YMCA coordinator for kids) everyday and telling them that they should terminate me for working with kids when I refuse to take responsibility for my own. Is it possible for me to get fired because of this?
Can your girlfriend get you fired?
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