HELP? Inner corners of both of my eyes are RED!?

I have bad eyesight, I wear glasses only at home when watching tv, I squint ALOT out of habit, and just recently the inner corners of both my eyes have been bloodshot. It's really noticable and different ppl at school pointed it out to me today. I have been staying up til 1-2am everynight, so idk what caused my eyes to be like this? Lack of sleep? Help please.......