Are These Psychic Abilities?

First, let me start off by saying I'm new here and I'd like to find out if I'm actually psychic or just crazy.

My life was ordinary up until I became about 12 or 13 years old. My grandfather became ill, and he didn't want to go to the hospital no matter how many times my grandmother said he should go. So he was sick for a few days and one day I came in with my grandmother to check his temperature. I remember his temperature was still high and he was basically knocked out cold; fast asleep. After we were done, my grandmother left but I hung around for a few minutes. Everything was normal, so I decided to leave. Right when I opened the door something in my head told me that he might die tonight, and it wasn't my conscious and it didn't sound like nobody I knew. I was slightly freaked by that, but didn't tell anyone, until the next morning.

My mom woke me up around 6 A.M. Telling me that my grandfather had died. Now that really freaked me out! I haven't experienced anything like that since.

A few years later, I began to experience other "abilities", if I could call them that. When I'm walking down the street or basically anywhere, I would see flashes of colors in people or anything around me. I believe that they are auras, but I'm not certain.

All I'm asking is, could this be psychic abilities?