So, if you want your pregnant ex to return, make sure you provide her compelling reasons to do so. Create a detailed list of the reasons why she broke up with you, for example. Then, once you've identified what was repelling her, begin to alter and better yourself in ways that would re-attract her. She'll need to see some sign that you have changed for the better before she can consider returning to you. So, do something kind for someone else every day. That will show her that you have good morals and don't take advantage of others. If you make some effort now, it will be much easier for you to win her back later on. So, stop dwelling on her past actions and focus on improving yourself and your life going forward.