You have classic hypothyroidal symptoms. Warfarin does have a correllation with hypothyroidism, inducing it, and worsening it. You might want toseek (you should seek) alternative anticoagulants. Homeopathics will and do work wonders. Here are two websites you should check out. One is info on hypo-t and one is info period, plus tons of links and an astounding testimony on what can and will happen if you don't treat your hypothyroidism, and also what to watch out for with doctors. Good luck.
personal.bellsouth.net/w/u/wurmstei/ : testimonial and awesome information site
www.medscape.com/viewarticle/410539 _3 : info about the correllation between Warfarin and hypothyroidism, along with some info on hypothyroidism. I suggest you look up the first one first so you'll be a little better informed.