<human>: Can you provide a brief overview of the text?

This was long before we were dating, but I'm still disturbed by it.

We've been dating for 8 months, and recently she had told me she had to open up about a dark side of her past that she hasn't told many people. When she was in her early 20's, she used to work as a prostitute, or a "call girl" as she called it.  She told me its in her past, but she has no regrets. She says her past shouldn't define who she is now, that her past is in the past, and that it shouldn't matter.  She said she was trusting me immensely with this. I just can't believe it and can't stop picturing her with countless other "suitors" paying her for sex.  She says it was just part of her past that she doesn't talk much about, but I'm not sure if I'm okay with this.

Am I making a big deal out of this for nothing or am I right to be upset?  I know its her body, but I still feel like its dirty and it makes me uncomfortable.  I don't think I'm okay with the idea of paying money for sex.  I'm still glad she trusts me enough to be honest with me about it.
<bot>: girlfriend of 8 months opened up to me that she used to work as a prostitute long before we were dating.  Am I right to be upset or disturbed by this?