I saw my grandpa's ghost

On September 25th of 2024, he unfortunately died. But the night before he died, he came to visit me. I was lying in my bed, trying to go to sleep, and suddenly I feel something in my doorway. I listened to/felt the presence (I don't know what to call it), and I knew it was my grandpa. That really confused me because no one had told me that he died. To my knowledge, he was still alive. I had never (and still have never) gotten a visit from a living person's spirit before. So I wasn't exactly sure why he was here, but I wasn't going to question it. I enjoyed his presence while I tried to go to sleep.

I also had an experience that I've never had before. I imagined him being blue. I didn't get a color with my two grandmas that visited me. Maybe that was because they were dead and he wasn't yet? I honestly don't know and if any of you know and want to tell me, I'd appreciate it.

Anyway, I was just lying there, enjoying his presence, and I can't remember how I stopped feeling him. I don't remember if he faded out or disappeared suddenly, but when I stopped feeling him, I could finally fall asleep. When I woke up the next morning, I didn't think much of it, but at 6:30, I found out that my grandpa died. He came and visited me before that. So maybe his spirit had already left his body before he died? That confused me, though, because my other two experiences like this were with people who had died decades before. I guess I just didn't know people who were still alive could come visit you like that. I'm actually really interested to hear what you people have to say about this. Especially lady glow, lol. I'll get to your comments eventually. I hope you've enjoyed these stories. I've enjoyed writing them, even if I don't get to write them too often.