Hair loss and chronic fatigue

I am 34 year old, mother of 2 boys. My second birth was traumatic and I had emergency surgery 12 hours following it for a placental attachment that caused hemorrhaging. I had a hysterectomy, AP Repairs and a bladder sling done 14 months later in Feb 08. My last blood work came back normal on hormones and thyroid, a year ago come January.

Here are my weird symptoms:

Chronic fatigue;
MASSIVE hairloss (I’d say at 70% of my hair is gone);
Joint pain in hands & fingers, elbows, ankles, neck;
(For example, I wake up in the middle of the night and my arms from the shoulder down are numb, finger joints swell and hurt)
Headaches;
Dizzy spells;
Sporadic bouts where my legs feel heavy & tingly/numb;
Extremely dry sensitive skin (even though I use everything for sensitive skin);
My face is dry and red;
Extreme mood swings (happy one minute, crying the next);
Weight loss (have lost about 20lbs in the last 6 months without dieting);
Sensitive to the cold, especially hands and feet.

Over the past 2 years, these symptoms have come on slowly and are now making me worry there is something wrong with me. The hair loss started 3 years ago after the birth of my second child, continued slowly until my hysterectomy a year later, and has not stopped since. I have always had extremely thick hair so this is definitely not normal. I’m afraid I may end up completely bald in the next 6 months if it continues to fall out this way.

Do these symptoms go along with some disease that I’m not aware of? All these symptoms to me seem sporadic and not connected.

Thoughts?