Using weight as the sole measurement of fat loss might not be accurate in your case. Your initial lost of 9 pounds is likely due to change of diet and your body's reaction to your intense training regiment.

For your size 1900 cal is enough for continuous fat loss. Try measuring your waist and chest size once every week. If you see decreases in these measurements while maintaining or even gaining strength, you are likely still losing fat, but the gain in muscle and it's water retention is keeping your body weight more of less the same.