Warfarin Sodium and constant hunger

I have been on warfarin for 14 weeks. I do not enjoy taking this medicine! I am short tempered! I do not know if it is the medicine. It may be saving my life! I am gaining weight and at the beginning I was very tired. Now I am frustrated and upset frequently. My husband had a rare cancer removed from his stomach. I am not dealing with the situation very well. I do not have the stamina that I used to have to deal with a tough situation. I walk about 4.7 miles three times a week. I gained five pounds in the last five days. I also quit smoking in March. I love to run but I am unable to do it! I need to walk the majority of the walk. I am bloated all the time. I have a constant hunger! I have not been myself for a long time. I also found out that my thyroid is hypo. I have constant pain all over my body. My hip, shoulders, back and legs hurt. I wake up with the pain. I need to get used to the pain at 42 years old. I had a pulmonary embolism on march 27 of 2009 and they do not know why. My smoking is part of it but it does not explain everything!