No weight gain yet 16w ..

Mrs. Steward
Soo my tummy pops out definitely noticable but on the scale my weight hasnt gone up on the scale .. I lost 1lb in the first trimester now im 16w and weight is still the same ... confused but definitely feeling the pregnancy is going well.. Anyone else not gaining? This is first pregnancy for me due 6/28/17 :) God Bless <3