I was with my ex girlfriend, and a friend of us talking in a table outside, my ex girlfriend was pregnant and she was smoking cigarettes when she is never been smoking and i was saying to her that how does she smokes cigarettes now that she is pregnant? And she was yes is not your business
Dreams about ex-girlfriends often represent unresolved feelings or unresolved issues from the past. The presence of your friend in the dream may suggest that you feel comfortable discussing personal matters with them.
The fact that your ex-girlfriend is pregnant in the dream may represent something new or unexpected that has arisen in your waking life. The fact that she is smoking cigarettes when she does not usually smoke suggests that you may be concerned about her well-being or that you feel that she is making an unwise decision.
Your questioning of her about her smoking habit and her response that it is not your business may indicate your feelings of powerlessness or a lack of control in a situation that is important to you. It might be a good idea to reflect on any current situations or relationships in your waking life where you feel this way and consider how to address these issues in a constructive way.