Hi Sophie
Welcome to SpiritKeep!
Dreaming about your grandparents is a sign of love, security, wisdom and protection.
I have had similar dreams about my grandmother who has passed away. I find them very comforting. I always feel that she is just wanting to be near me and watch out for me. I have heard many people say that our passed loved ones sometimes do try and communicate with us through our dreams.
If you feel like your grandpa is trying to tell you something, you could try talking to him before you go to sleep. Ask him if he has a message for you and to come and talk to you in your dreams. I have talked to others who have tried this and they said it worked!
To help you interpret your dreams better, here is a great site called Dream Moods that might help you understand your dreams better. I hope this helps you some!
http://www.dreammoods.com/[/URL]