How do you get hurt in your sleep? You roll off that bed, that's how!

Yes, my poor lil Landen had quite the day yesterday. He was cranky at daycare all day, then while still at daycare he and another kid collided and he has a bruise and a bump under his eye. We get home, all he wants to do is play outside, and he kept trying to walk to the park behind our house all by himself, but when he'd turn around to see if we were coming he'd stop and whine a little.
At about 7p, we went inside to eat supper and I set him in his highchair. I get his plate ready, and turn around to find him sitting straight up but his lil head bobbing back and fourth, with his eyes closed! Poor guy was so tired that he wouldn't wake up to eat dinner.
Trav and I layed him in our bed so I could change his diaper while he slept and then I let him lay there, we were planning on putting him in his crib a little later on.
I was downstairs on the computer editing photos, and Trav was upstairs in the living room watching a movie and all of a sudden I heard this really loud thud, followed quickly by a cry, and then I heard Trav run to the room. I was coming up the stairs and before I even saw Landen's face Trav said" Kimmie... get some Kleenex's he's bleeding!" I went into instant panic mode for some reason, I bumped into the kitchen table and I lost my train of thought for a few seconds, it was so strange.
Well, as soon as I saw his little face I got a lil teary eyed (I didn't cry though), there was blood all over his face, his hands, his shirt had blood on it (the new gap shirt "gamma" just bought him).
I wiped his nose and it stopped pretty quickly. We checked his mouth, and nothing was cut or anything in there so we were relieved.
Basically he rolled off face first off our bed (about 2 feet) and landed flat on his lil nose. He wouldn't let me clean it off last night so I bathed him this morning and he was still having a really hard time letting me wipe up the dried blood but I got most of it. I got a few pics last night so I will try to post them, my poor guy.