Hollow/sunken eyes & bags at the age of 19 - how to improve it? (Photo)

I've been wearing glasses for as long as I can remember and just switched to contacts. Not having frames above my eyes revealed this unpleasant view on my face. I usually go to bed around 2AM, but I still get a good 6-7hr sleep. I recently started drinking water as I should, I rarely drank more than 2-3 cups a day before. My doc said it could be caused because of my nasal allergy, it's basically swollen inside thus making a blockage. Been taking meds for that, but can it really be the cause?

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