Your dream is rich with complex emotions and themes that can be interpreted in various ways. Here are some insights into the elements of your dream:

1. Surprise Baby: The unexpected arrival of a baby can symbolize new beginnings, responsibilities, or aspects of yourself that you might not be ready to confront. It could also represent a creative project or idea that you have nurtured.
2. Mental Hospital: This setting often reflects feelings of confinement, anxiety, or a struggle with mental health. Being in a place where people are "babying" you could indicate a desire for support or a fear of losing independence.
3. Amnesia and Memory: The theme of memory loss suggests that there are parts of your past that you may be avoiding or unable to confront. The fact that your memories return gradually hints at the process of healing and understanding.
4. The Guy in Love: He represents a connection to your past and possibly the emotions tied to your experiences. His presence may signify unresolved feelings or a longing for understanding and closure regarding your situation.
5. Grave and Death of the Baby: This is a powerful and poignant symbol. It could signify guilt, loss, or a fear of failure in nurturing something important in your life. Digging yourself out of a grave suggests a struggle for survival or the desire to escape from something burdensome.
6. Injections and Memory Loss: This aspect indicates external forces that may be contributing to your emotional state. It might symbolize pressures in your life that are keeping you from fully understanding your experiences or emotions.

Overall, this dream seems to explore themes of trauma, loss, and the struggle for self-identity and memory. It may be beneficial to reflect on any recent changes or experiences in your life that resonate with feelings of loss or confusion. Consider journaling about your emotions or speaking with someone you trust about these feelings, as it could help you gain clarity and support in processing your experiences.