The doubt in my wife?

I am jacobjhon. I wnat an advice. I have doubt in my wife about illegal affairs. I am a M.Com graduate. Now I am working in a Private Company as an Accountant. My family belonging Wife, Mother and Two child. I got a chance to go gulf as an Accountant. But I cannot go with peace of mind because the doubt in my wife. If i go to gulf I can improve financially. Can you help me through giving a good advice ?