Dreams about family gatherings often symbolize a desire for connection or unresolved feelings about relationships. In your dream, the presence of your ex-husband and your son suggests that these relationships are still significant to you, and there may be lingering emotions or thoughts regarding your past together.

The corona in your ex-husband's pocket could represent something that is being hidden or kept private, possibly related to your past relationship or his current life. Pool sticks may signify competition or playful interaction, indicating that there might still be elements of fun or camaraderie between you two, despite the history.

When you checked his phone and saw your full name, it could indicate a sense of identity that is still tied to him, or perhaps a reminder of who you were in that relationship. The fact that you mentioned being pregnant with your ex-husband's child, even after divorce, suggests unresolved feelings about your past together and perhaps a longing for what could have been.

The dream may be reflecting a desire to reconnect, to communicate, or to share important aspects of your life with him. Your ex-husband’s response, asking to know about the appointment, indicates a level of concern and care that still exists.

Overall, this dream may represent your feelings about your past relationship, the complexities of co-parenting, and the potential for new beginnings or changes in your life. It could be beneficial to explore these feelings further, considering what you truly want and how you feel about your current situation.