I have felt my eye is bulging for months now. I woke up this morning and eyelid is swollen and feels bruised. What could this be?

Thyroid check! If your eye is bulging it may be your thyroid. See a doc as soon as possible to get it under control and prevent worsening which can become permanent. If the bulges too much the eyelids may not close completely and therefore your eye gets irritated, swollen lids ....