if you look at many peoples timelines for the n-400 is between 4 to 6 months start to finish.do you have check status on line case number to check your status after the interview, try calling the 1-800 number to see if your oath notice was mailed to you it should be 45 days after the interview,lets keep fingers crossed this week. you shoud have it before april,unless there is a problem, you can tr