knee problems

since the beginning of the year, my legs have been feeling heavy. despite not wearing 'high' heels, i thought my boots might be the problem, or the tights i was wearing. i slept with my feet elevated, but it didn't seem to change anything. then, a couple of weeks back, the pain started to concentrate more around my knees, and then,more and more so, until on Tuesday, when, while on a walk with my father (and, ironically, about 5 minutes after discussing whether or not i should see a doctor about this), there was a piercing pain in my right knee and we had to stop.

i've now got an appointment for Wednesday, and in the meantime, i'm trying to get a precise idea of how the pain is. the problem is, it changes every day, or even throughout the day. sometimes it hurts to be standing, sometimes to be sitting. sometimes walking is painful, sometimes it helps. sometimes the pain is like a sharp needle, sometimes it's a throbbing. sometimes it's at the front of my knee, sometimes the back. sometimes it's just one knee, sometimes it's both. sometimes it's just the knee, sometimes it goes up and down. oh, and possibly unrelated, but nonetheless there, sometimes other parts of my body start hurting, too. i'm sure the doctor's gonna have a field day...