Allergies

I am not sure what is wrong recently; I am getting red!!
And I don't mean it just literally; my face looks red and there's reddish spots....not really pimplish or portruding; but just, the surface of the face is uneven and not smooth and it's really bugging me !!!

Is it due to stress?
I don't know...
It could also be due to the weather?
My living environment?
Bedsheet? Pillow?
Food (assuming I eat lots of weird stuffs?)
I don't know, I don't know...I DON't KNOW!!!

Anyway, will change my bedsheet again (change it weekly) and see if it's okay.
Hope all is good soon after....