Is this truly a glimpse of heaven?

Or is it just a figment of my imagination? I thought I had a near-death experience where I died for a second, saw a blast of light and felt a lot of warmth and mercy, and then came back to my bed.

It seemed to me as if God was communicating with me and it seemed really real to me.

Now it is eight years later, and it seems possibly even unrealistic to me. Am I a disbeliever now because I am having doubts about "seeing" God even though it might have happened? Who knows?

Perhaps it seems unrealistic because I am back in the ordinary world where I go about my daily life not thinking about spiritual matters.

I am just wondering, why am I not dead now and why did God give me another chance to live. I wish I would go straight to heaven, but it did not happen and now I am experiencing a hell of a very unstable world ( you know the ups and downs of life ).

When I see other people talking about near death experiences, I become sort of a doubter, and its weird because I am doubting my own beliefs as well.

But all I remember was this very mystical feeling I got after the experience. I knew right then that God existed.