My dd (10) has been off school for the last 3 days due to just feeling completely wiped out - no pain, eating normally etc and by late afternoon/early evening she perks up. She sleeps well then in the morning we are back to her being unable to get out of bed. Does it sound like she's fighting something off? We had the exact same thing happen 6 weeks ago but she's been absolutely fine and full of energy in between the episodes. Confusing!