not getting much sleep

Well, the medication the doctor gave me to try does not work, only makes me dizzy and have a horrible headache. So getting just a couple hours sleep. Early this morning when I finally got to sleep I didnt have night mares which was the first. Instead I watched myself sleep, and then traveled to my grandma's house where I saw her ghost playing her fav song and humming it, and also found a note that was left behind. Then ended up watching my sleep and I was crying. I woke up shortly after this and was crying in real life. It was the strangest thing.
I wanted to prove that there was nothing left behind by my grandma when she past away so I went to visit my grandpa, who has done nothing to the house after her death. I looked in the place where in my dream I found this note. And to my shock there was a note written by her that read the same thing as I saw in my dream.
So now I am not sure if I ever saw that note but just recall or if there was a message to learn from this. It was very strange.
I also felt like I got no sleep but I know I did as I looked at the time just after 3am and then woke up at 5am... I know that is not much sleep but thats normal for me to only sleep a few hours a night, and never more then 2 hours at a time.