Hi, I Had An Abortion About 8 Weeks Ago I

Hi, i had an abortion about 8 weeks ago i was about 7 weeks pregnant and i had gained some weight. Ive been dieting and excersizing for about 6 weeks and i have not lost any weight no matter what i do my body is still holding onto the weight. Whats the reason for this does my body still think its pregnant so its holding onto the weight?