Warfarin Sodium and skin sensitivity

Dealing leg pain and swelling fpr over 6 months - having 2 DVT test and 3 MRI's they finally found that I did have a DVT in my left leg and now I am taking Warfarin as of May 30th 2008. I now have severe joint pain, sore skin/sensitivity, my vision is going I can hardly read anything all of a sudden, so exhausted, sleeplessness - even after taking an ambien and getting some sleep, I can take a shower dry my hair and I am ready to go back and lay down because I am so tired. the doctor says thin blood does not carry oxygen as well so this is why I am tired. I am not anemic as I just had that checked. I can feel my muscles getting weaker. From reading what everyone else says it must be this drug, but I don't think I could live without it since my clot is so massive. I feel like my life will end soon I am getting weaker by the day...is this just my imagination? I know I am depressed but I do think all of the symptoms I am having is from the warfarin(besides the pain from the DVT which is still very painful)