My Daughter Is 18. She Is Tired All The Time.

My daughter is 18. She is tired all the time. Even when she gets 8-10 hours of sleep. She is also complaining of being dizzy. Her fingertips are white, no pink at all. She recently stopped getting the Deppo shot. Her last shot was July. She has been on Tri-Sprintec for 2 weeks now and has not started her period yet.