the word exaggeration was not used to be critical, but to get a better clarification not about the whole story but about just the hallucinations themselves, now provided.
Presumably, your hallucinations were from sleep deprivation. Some people are more likely to have that than others. I would be interesting to hear from a neurologist or related expert. May have been multiple factors.
A while back, we had one person post her story from Whitney- hers turned out to be a strange manifestation of migraines.