After you file

It has been over ten weeks. Although I did file on the 31st of March. Not sure if that is close to the deadline. I reseved  a letter asking for more information on my iteamized deductions. Which I was very prompt in returning. No more than a two day turn around even though I was given a month in which to return the information. My families and my financial situation is such that I am greatly in need of these funds. Not to blow on extras and unneeded material possessions. This is why I am searching out for some kind of detailed answer. Not just more of the same.