Are you grinding the seeds, or have you bought ground? The outer husks of the flax seed are too hard for thebody to break down in digestion, so any flax would just come out basically. You would be missing out on the healthy omegas and other good things.

160 calories is not that much. On LC plans you need to be eating enough calories to support your metabolism anyway, and many eat too few. If 2000 is to many for you, I would look at other ways to lower it then cutting out suppliments. You might look into psyllium husks however as they are fiber and not as many extra carbs as flax.