Prehistoric: Fever Wakes up and Turns into a Baby

My head was so heavy that I was smoking, and the sun was over 40 degrees, so I just pretended to be dead. As soon as I fell asleep, the sky was dark and the earth was dark, and when I opened my eyes, I saw the clear blue sky. He was lying on the ground wrapped in animal skins, and there were several small figures beside him. Did he travel through time? Or dreaming?