The first month of dating is really a get to know you time. In fact, the first three months of dating are the time to decide if you even want to continue dating someone else. You should always assume that someone is playing the field during these first three months — and they should assume the same of you. The thing I can’t figure out from what you’ve written, is why she’d tell you, during the first month of dating, that she’s slept with two of her exes. I don’t think she’s done anything wrong by sleeping with them, but telling you is provocative, and I’m not sure what type of reaction she was hoping to elicit, or what she hoped to gain by sharing this information with you. Do you?
I definitely understand why you thin less of her. Giving you that information either drives you away and makes you feel like you’re less special than you might have been otherwise, or it lets you know that she’s pretty “easy going” about sleeping with men. That said… I certainly don’t think less of you for continuing to date her! I just think you should factor this behavior in as you continue to get to know her and decide if she’s someone you want to continue dating.
Hope that helps!