Female, 28y/o, 5'4", 97 lbs (from 105 lbs mid-2010, in spite of good appetite). ER 3 days ago due to HR 136. BP 120/90. Fatigue for the last 3 weeks despite good sleep. EKG & CBC okay. WBC 12,400. Took 2 cycles of contraceptive pills without 7-day break. Last period 2 wks ago, after last pill.