I am sorry your having so much anxiety but I do believe the wise and wonderful members have give you great advice. (((((((((HUGS)))))))))))
Yes you can dream while under anesthesia from what I understand. The similarities between the patients' dreams while under anesthesia and during natural sleep suggest that the dreams during anesthesia occur during the early recovery period when patients are still lightly sedated, but are in a definite sleep state.
The dreaming reported by many patients during surgery, in most cases, does not mean the anesthesia is wearing off. I hope that answers your question.
Take care and keep on talking with us.