Red pixels on/in my iphone screen

Hi Guys!

So i bought my iPhone 5 a little over a month ago now and ive noticed red pixels kinda things on my screen. At first i thought it was fibres stuck on my screen protector but it isn't. I'm extremley careful with this phone because its an iphone and i keep somewhere safe when im not using it or when i go to the bathroom and so on.

Any suggestions as to what the problem could be and would i be able to get it fixed with the 1year free warranty?

Many thanks

Rukshana 🙂