Sad

I finished my chemo and had bilateral mastectomy the first of September. I started Arimedex the first of October. Around that time I started feeling sad which confused me. I had to planned to have a party when I was pronounced "cancer free". Now I cant make it through a day without crying. I am also very anxious all of the time. My doctor did put me on an antianxiety med but it doesnt seem to be helping alot. I had a couple of week where I couldn't get out of bed to go to work. (I worked through my whole course of treatment, minus a few sick days). I am now making myself get up and get to work, but it is hard to be productive. Thank goodness my boss is understanding! Any tips on shaking this VERY dark cloud I have over me. This is all so suprising!