I heard the laughter of a dead baby

Hi again! I'd like to share another story that happened to me some time ago. All of the stories I post are real and I'm not making anything up.

So anyway, here's my story. A month ago there was a period of 2-3 weeks where I was constantly hearing baby laughter. I'm alone in my house, everything is turned off (TV, phone, etc. ), the neighbors don't have any baby, a very little one, it wasn't even 2 months old, it was laughing and smiling. I didn't really give it much thought and I fell asleep, this kept happening for a period of 2-3 weeks as I said.

When we went to visit my grandma's grave (may she rest in peace), the grave across from it was of a baby that had died 35 days after it was born. The headstone had the words, "We hope to hear your laughter once again. Love, your family! "

What do you think, could I have just dreamed of that baby and what's the connection to the laughter? Please, give me some sort of answers.