Did calipers today.

I did calipers today and I came out to 9.1 percent. Which about 3% below when I first started 10 days ago. Im hoping to do a Bod Pod on Sunday once my glycogen is back to normal and am holding more water. Workout today was legs and abs. My legs are like noodles right now. Calowise last night and today Im trying for 2000-2100 calories. Im just wondering is it possible to go too low on this thing I have not done 1800 but dont plan on it.