What is the name of your state?AZ

Save my house..
I am barely able to afford my house that I purchased new back in December 2004. I purchased on an ARM 2/6 with a fixed rate of 2 years. Yesterday I get a letter in the mail stating that EMC( mort comp.) is going to raise my rate by approx $300. What an outrage I will certainly lose my house or have to sell it. So in a pantic I grabbed my loan papers on the way to work this morning to look them over. Sure enough on the Lending Disclosure Statement it says that the rate change may commence on the 1st of July2005. Of course being that this is my first home I didn't fully understand all of this foreign language when I sighned the contract, but I was definitley lead to beleive that my rate would not change for 2 years and I figured I would beable to refinance at a better rate by then to avoid the rate change.
That being said there is another document that is not signed but it states my
loan Program name. It reads as follows:
INT.-ONLY FIRST 2 YEARS
2/6 MONTH ARM
FIXED FIRST 24 MONTHS
3/1.5/6% CAPS, FLOOR=START RATE
notice this fixed rate...
The document goes on to say and I quote:
"Your rate and interest can change after the first twenty-four months and every six months thereafter."
To me it appears that the contract contridicts itself.
As for what I was lead to believe, well the mortgage lender (concord) reassured me that I would not experience a rate change for 2 years.
In closing I am asking for any suggestions as to what I can do or if there is someone who speaks "Legal" that can decifer my contract.
Please help....or I will lose my house..
Respectfully
RodroAz