I have woken up with an ache above my right eyebrow, and have just noticed that I have a sac of clear fluid on the outer side of the eyeball which makes my eye ache when I move my eye, will it clear on its own, or if it bursts, will this damage my eye? I have never had conjunctivitis before but my eyes have been itchy for a few days. Have I scratched the eyeball, and this is the repair?