Surgery Date up in the air !!

My Rny surgery is scheduled for March 27th. I am very nervous and excited!!! Yesterday my bariatric co-ordinator called me and said my surgery might need to be on a different date. Now I am a little anxious to say the least... I am going to call them first thing on Mon. morning to confirm my surgery date. I know it will all work out, I just have this on my mind! Has anyone else gone through  scheduling problems with their surgery and if so did everything work out??