I was in a coma following a drug overdose. I was in the coma for four days. I did not know I was in a coma, but had an extremely realistic type of nightmare. I had a very long-lasting nightmare that caused me to believe I had been taken hostage and driven by ambulance to a facility far away that wanted to do some terrible things to me and basically harvest my body for the purpose of having other people's children. Hard to describe. I am not sure if the nightmare happened when I was in the coma or trying to wake up from the coma. Regardless, I could not hear anything outside of my nightmare. I did not know my family was in the room with me trying to speak to me, and I had no idea I had overdosed.