Welcome greywolf2.
When you say you started medication this year do you mean 2011? If you've just been put on them it does take time for the meds to get to a therapeutic level. Whether you have just started meds or not, I suggest speaking to your pdoc. I find that during the winter months I become more depressed. I use a SAD lamp and that makes a difference for me.
If you're not already I would suggest tracking your mood because it may help you identify triggers etc. I use this online one at:
http://www.medhelp.org/land/mood-tracker