Overhydration, Possibly?
 

I just started Soccer season, this past monday;
So, we've told to drink lots of water.
I usually have 7 1/2 - 11 Glasses of water daily.
But starting yesterday, Everytime i drink water I throw up...
I can eat perfectly fine, but as soon as I drink water I feel sick && my face either goes pale or gets really really red.

I don't know what it is, I was wondering if anyone would be able to anything about it...

My big brother suggested that maybe i'm just overhydrated?
What do you guys think?

if water is making you sick you should seek medical advice from you doctor as water is essential.

it could be that you are overhydrated but it could also be a symptom of many other things.

i hope you be ok and good luck with the soccer

With that much it is very unlikely, especially considering you are also playing sports, that you are overhydrated so I wouldn't worry about this.

Make sure the water you're drinking is not too cold as if it is that could potentially cause it. Also, just drink small amounts often rather than a glass at a time, just sips and see how it goes. If you can't keep any water down then it would be a good idea to see a doctor but it's very unlikely to be overhydration given the amount and your signs.