What message did her husband send to make him feel guilty?

Don't make trouble with him at this time, because the more you make trouble with him, the more he feels that he is not wrong. You can tell him that you are divorced. If he still loves you, don't go to mistress again. You can show him the screenshot of your chat and let him bear the consequences. I think if your husband is really cheating, you can send some information about his cheating during your pregnancy, so that he will know his mistake and feel more guilty about you. Because it is his fault, he will love you more. If your husband really cheated, you can send some. Your husband cheated on you when you were pregnant, so that he would know his mistake and feel more guilty about you. You can say that your husband cheated on you, and your husband doesn't love you anymore. He will feel guilty and be better to you.