Delusion,fear and panic and shame

After facing death,I passed through a period of more than six months in delusion,fear and panic associated with shame.I was very much frightened and the experience was horrifying .After so many years my personality has completely changed,I don't know for better or for worse Although I have been occupying the Same body for 64 years.How to describe different stages and passing through different states In my mortal life? can it be termed as different rebirths(any kind of) for an ordinary man In Buddhist terms.May I add that Before twenty years I took a CANCER CAPSULE and went into deep and continuous sleep without interruption for 4/5 months, I woke up for one day and went into deep undisturbed and uninterrupted sleep for another three months. finally I woke up as a normal man.I could not come to a conclusion how to describe such experience.