[pud's friend]

I've been trundling on quite 'well' for a while now but a couple of days ago, my right eye started hurting a bit. Then last night, I just had to take my lenses out (they stay in for a month at a time usually).
Vision is good (apart from wearing glasses that arent' strong enough ) but my eyeballs feel like they hurt. it's like i've been poked in the eye- but i haven't. No horses have butted me for a while and haven't had a pointy thing in there. they're not red, inflammed or swollen.

Hurts to scrunch them shut and look side to side. all feels a bit bruised...

Any ideas what could be going on ?