Explanation: One way it could be interpreted is as something bad that happened. The person went through something rough or traumatic . For example, if someone the person loved died they would question if it was real because it is too rough to accept. Another interpretation could be as something amazing happened to the character. If the character got news that they had been promoted to their dream job or work, they would be happy and be in disbelief, they would be so happy they couldnt believe it was real.
I think one way it could be interpreted could be, someone trying to figure out if what happened to them was a dream or not. I think the second way could be, something amazing just happened and I can't believe it did, it was like a dream. I hope I help you!!
