So sorry Liz.....I completely understand about the pressure as opposed to the temps. Today, my knees have felt so swollen, a few other joints too but not as bad as my knees. This whole week is pretty crappy weather here, so I expect I'll continue to feel blechhhy for a few days.
Let me know how that natural light works for you. I've heard many say it does them a lot of good. I have a touch of SAD as well, it usually hits me in Jan/Feb and lasts until April. YAY! Something else to look forward to!