Being 'healthy' isn't working?!

I've been trying to eat really well for the past few weeks, and I actually did some exercise today. But I'm still exhausted, can't sleep, and feel like shit. I've been upping my water intake too, but all that's done has made me need to pee all the time. My head and jaw hurt, and my legs and chest hurt. I can't concentrate. Plus school is starting again Monday. Am I supposed to be noticing a difference? My weight has dropped a little, about half a kilo, but my stomach feels so stretched and wide and fat. Is it bad that I want to be an in-patient? I want to hide away, I want to be safe. I want friends who will accept me for who I am. Please?