21weeks pregnant losing weight

blanca

At first of my pregnancy I wasnt really gaining an weight I would gain 2lb and lose them and when I was about 16weeks I gain 12lbs in a months and my doctor said that was good and for some reason now I lose weight like crazy I'm already 7lb down in a week and half and I'm not even having morning sickness or nothing I eat 3 times a day and snacks. My husband says my belly looks smaller. Does any one now is it bad to lose weight while pregnant?