Could a really stressfull time at work cause anxiety, bit of confusion and panic coupled with lack of sleep also somewhat emotional unlike me or physi?

Anxiety?: Possible anxiety if the medical work up ruled out anything physiological as cause.

Stress: A difficult work enviornment that leads to excessive stress could cause these symptoms. Check with your doctor to rule out any medical disorder. If your stress continues consult with a mental health professional. Also consider reading my book, managing the stress of success. Best wishes.