Synthroid and fatique

Been taken synthroid for 2.5 years. I am 30 old male, Really athletic.
I notice that I get fatique very easly and memmory and concentration problems. But the most noticable is shortness of Breath, and I have very high anxiety. I lost wait since being on synthroid.

I was diagnosed with hypothyroidism in April of this year (2007) kind of by accident through a routine checkup. I had gained a bit of weight over the past two years, but that was really my only symptom. I was begun on 75 mcg of a generic brand of Synthroid, levothyroxine. Since I began this medication, I have rapidly gained another 15 pounds despite a 1,000 calorie per day diet. I retain fluid horribly. My ankles, wrists, hands and face swell daily. My muscles ache, especially my legs, upon walking across a room. I'm fatigued, short of breath. My LDL cholesterol level has skyrocketed in only three months and now I'm being told I need to be on a statin drug. I cry frequently and feel uncharacteristically anxious and irritable, but this could be due to the frustration I am experiencing with the loss of my sense of well-being. In essence, I felt much better before being placed on the medication. I may, in fact, discontinue the medication totally and see if over time I begin to feel better. Like so many other stories I'm hearing, my doctor seems totally unconcerned.

i've been on synthroid for 9 years. started at some low dose and gradually went up to112 mg. get extreme itching all day everyday if i don't take allegra for that.not a rash just itching. that doesn't bother me as much as the fatique. every joint in my body aches all the time. sure there are better days but fo rthe most part it's bad. tried physical therapy and chiripratic care but no avail. they ended my sessions. my legs get sooo weak and my feet burn lower back really aches. sometimes muscle cramps. i'm very negative towards my loving family and it hurts me to do so. can't seem to keep upbeat. soo tired all the time.
is it the syntroid? i used to be very energenic and a doer. now i have spurts of activity in the morning , but then i just can't get motivated. help me any suggestions?