Is it possible that i'm very easily tired drained exhausted because i'm actually giving my body too much rest. i get tired i go lie down always! ?

Easily tired: Would check TSH for thyroid function, Vit d and CBC/iron for iron deficiency major causes of fatigue and even consider sleep apnea Do not smoke and check for HCG ( pregnancy)which makes you tired. With constant sleeping you do get deconditioned so walk or exercise 30 minutes a day,

Fibromyalgia ?: 30yo has exhaustion when upright & history of Holter EKG, nauseousness & GI Ultrasound; signs and symptoms of autonomic dysregulation. Adynamic musculoskeletal functions beget autonomic neural impingement & dysregulation at sites of lax joints; via a repetitive injury force called "gravity". These physiologic phenomena are etiologic for fibromyalgia, which joins the differential diagnosis here.