Poem Analyzation?

I know this isn’t a topic for this app but I don’t really have anyone else I could ask. I have to write a reflection about this poem for English class and I just can’t decode it for the life of me. I have to summarize the main idea of the poem and state what I learned about the author from the poem.. if anyone could put some ideas that would really help. It’s by Yehuda Amichai.

When I banged my head on the door, I screamed,

“My head, my head,” and I screamed, “Door, door,”

and I didn’t scream “Mama” and I didn’t scream “God.”

And I didn’t prophesy a world at the End of Days

where there will be no more heads and doors.

When you stroked my head, I whispered,

“My head, my head,” and I whispered, “Your hand, your hand,”

and I didn’t whisper “Mama” or “God.”

And I didn’t have miraculous visions

of hands stroking heads in the heavens

as they split wide open.

Whatever I scream or say or whisper is only

to console myself: My head, my head.

Door, door. Your hand, your hand.