Anyone else get really upset when therapist told them they have fleas?

My new personal therapist, who I haven’t known for very long said my FMIL is exhibiting Narc behavior based on what I told her. 

(My old therapist who I saw for 6 years for trauma after having a serious illness / my family distinction passed away unexpectedly about 6 months ago) 

My own mom is an NMom. I have very limited contact with her. 

Our couples therapist who we have been working with for about 1.5 years asked if my old therapist ever gave me any specific diagnosis and I said no because I wasn’t aware of one. She then said it’s not uncommon for NMom children to have BPD, but she said she wasn’t diagnosing me with BPD or implying I had it. 

She didn’t use the term fleas, but she said I may be imprinting Narc behavior on my FMIL because I have my own work to do that I wasn’t able to resolve with my own parents who she said likely both have a personality disorder. 

I felt like she was saying I may have fleas and it totally brought me down to my knees. I have spent most of last night and this morning crying. Fleas or possible personality disorder are my worst fear so I’ve been feeling really sad and angry that she asked me if my last therapist gave me any sort of diagnosis. Anyone else have this experience? 

Obviously want to get better if I do have fleas and will go to a different community if I do have a personality disorder, but nonetheless has really rocked my world. My partner agrees with couples therapist.