Has anyone else travelled to heaven (State of Nirvana) and come back and know what happens after death ?

When I was 11 years old, I found that I was floating on the ceiling and found it difficult to get back into my body. I realized that it was no dream as I was sweating and scared that I would not be able to get back into my body every time it happened. At that time (1961), I could not tell anyone of this as I would have been considered as stupid or mad. It continued for over a year but as I was too tired, I stopped dozing off in order to be totally in my senses. The OBE went away for awhile, and was replaced by messages and visions. A year ago, I had a question about life, death and after life that needed answering. I was taken on a trip and shown what happens when death happens, what heaven (Nirvana) really is, the manner one is judged, the manner those with unresolved issues are sent back or punished, and the manner they can restart the process. This was a true vision and I hope to publish it if no one else has seen heaven and the process and spiral of life death and after life. Tks