Dreams about pregnancy often symbolize new beginnings, creativity, or the development of ideas. In your dream, the act of giving birth could represent a desire to bring something new into your life or to express yourself creatively.

The doctor's suggestion of a cesarean section (CS) may indicate an external pressure or fear regarding the process of this new beginning, suggesting that you might feel unprepared or unsure about the changes happening in your life. Your decision to push the baby out anyway reflects your determination to take control of your circumstances.

The baby’s unusual appearance and the fact that it has your sister's face could symbolize a connection to your sister and possibly imply that you see aspects of her in this new venture or idea. The baby's message about coming to save you might suggest that you are seeking support or guidance in your life, and the urgency to go back could reflect a fear of losing that support or feeling overwhelmed.

Seeing your sister looking normal afterward may indicate a resolution or reassurance that despite any fears or challenges you face, there is stability and normalcy to be found.

Overall, this dream seems to reflect your emotions concerning personal growth, the support of family, and the balance between fear and determination in facing new challenges. It might be helpful to reflect on any current changes or decisions in your life and how they relate to your feelings of support and control.