Broken cheekbone help?

So before i left highschool (about july time last year) a guy punched me in the face leaving me with a broken cheekbone, it was swelled and bruised and that was the same for about 2 months then the swelling and bruising had gone, the doctor at the facial unit has sent me a checkup apptment for the 19th of february just to take a look at my eye little does he yet know the problem i'm having now.. until now i have had no problems with it but just these past few days the skin around my eye has swelled up and my cheekbone is hurting i don't know whether this is due the the cold weather here in england or whether i have banged it.. I am 17, female. Do i wait for my appointment on the 19th or shall i get sooner apptment - and what could be causing this sudden change? Why is this happening