Welcome to the forum Anna,
Your experience at 19 some may call that the new birth experience, being born again, awakening to Life, rising from the dead, experiencing the kingdom, satori to a Buddhist or temporary awareness to your inner being or true nature. I believe that is the end of the world, and second coming of "Christ" that Jesus is recorded talking about.
Religion can get bogged down with dogma and doctrine which negates the experience of Christ. As you, i also find religious language doesn't always reflect the true awesomeness of existence and spirituality. Why worry or have angst about knowing what is to come? Didn't your past experience show you that time was an illusion and the world but a dream you were waking up from? To me your experiences agree more with truth and much of the teachings of Jesus more than any church taught dogma or tradition. Personal experiences are priceless for learning and understanding and are far beyond mere words. My advice would be to .... Rest in your "being", that is where Christ is. (not Jesus the man) . For in Christ we live and have our being. I have found resting in knowledge or what's to come while it gives one hope is devoid of the experience of the kingdom which is here now.
Again welcome,
Joseph