Adjustable Rate Mortgage Help If I'm On An Adjustable Rate Mortgage, Will My Rate Go Down, If The Prime Rate Go Down, Without Me Refinancing

If I'm on an adjustable rate mortgage, will my rate go down, if the prime rate go down, without me refinancing - adjustable rate mortgage help

I have an arm with a 2 years, but within 2 months of my mortgage payment is set to rise to $ 400. I wonder what will happen if the price of the first down, pay my mortgage instead? Please help, I'm confused.