That is not stress @rharphelle. May be you don't have the perfect word to describe the feeling. Stress can only lead to sleep and one of the common ways people respond to stress is by sleeping.
Depression, anxiety, stress, and boredom can all contribute to excessive sleepiness and not the other way round.
But oversleeping too has some side effects like headache, over sleeping can also be linked to diabetes and some heart disease.
Thanks for the feedback... Thats enough to keep me on my feet!
Very good sir, you need to be strong.