When the pupils become large, the term for this is dilated pupils. (Some people just say "dilated eyes", although this isn't a precise way to conceptualize it.)
Pink eye.
My children have had pink eye several times and if your eye is bleeding it sounds like more than pink eye! Are you sure you have not just scratched it to the point it is very raw? If that...
The most common cause, if it is the eyelid that is twitching, is simple fatigue or stress.
It can sometimes be helped by drinking fresh tomato juice if low potassium levels are a contributary...