Had a hysterectomy almost 5 yrs ago and now i have strange things happening to my body any idea?

On September 8, 2008 will be 5yr anniversary of my hysterectomy my Dr took everything except my ovaries. Well lately I have noticed that my apetite has increased, loseing hair 5 or more strandfulls at a time, low energy level, more headaches, I had read somewhere that about 3 yrs after a hysterectomey your ovaries will just stop functioning anyways and im wondering if this is why im having new issues. I have been suffereing from ovarian cysts since about a yr after the surgery they are under control right now...Does anybody have any idea why this is happening? Has it happened to anybody else? I have my annual coming up in a week so im going to ask my gyno when i go but was hoping for some words of wisdom from others to help releave some of the stress from worrying.