GAUTAM -Buddha(BUDDHADEV) and The capability of having several lives for an ordinary man or hallucination?

A friend of mine said GAUTAM-Buddha(BUDDHADEV) passed through several lives(Births and Rebirths)and finally he attained NIRVANA.In present day context do the experience s feel like walking on an Astro-turf or living in mothers womb.This is my personal experience which should not be considered BLASPHEMY.I divulged my experience to my friend.So he advised me to search books.After death is such an experience possible?