You know, cod is a fish. It's delicious. However you can get bacteria infections if you don't cook it right. And... that's what it gave you, because it was fed with pencil sharpenings.
I wish I was taller. (not too much tho)
No-way! Google+ lets you change your name, whereas youtube directly doesn't. Anyway, I have to grant this one I suppose, so yeah, no google+. Now the 1 person having an active google+ account hates you. He hates me too.
I wish strawberry was a berry
Done. Now every pizza tastes the same and as such is cheap.
Done. Yeast gets mutated, becomes tall as a 5-story building and can kill gorillas while making them drunk. It's also homophobic
I wish we had a pokemon of Steel/Poison type which looked like a ... pencil sharpener.
You wouldn't have memory loss from a hit to the nose. If it were stronger and higher (probably from another angle) you could have hit the brain, but now nausea is probably due to hitting the many nerves that are in the area. You might have had blurred vision and feeling dizzy for a bit after the impact with the ball. It's perfectly normal. As long as you remained conscious and have no deep cuts it is unlikely to be any serious damage.
What Jerry said has a basis, but only if you experience difficulty in staying awake. So, sleep well and don't worry. If the problem comes back tomorrow go see a doctor.