Should I be worried?!

Zsanett • Mom of 6... soon to be 7:)
Last Friday I had an appointment with my ultrasound tech.. everything seems normal but they said I had a little too much of emciatic fluid  ?!
Does anyone heard that before ?! 
I am 34 weeks and she is 5lb 3 oz to me that's sounds pretty normal, but what really means too much ?!
I'm going back in two weeks to look at it again.. Dr said I need to be careful with sugar .. like pasta and bread and stuff .