Losing weight while pregnant😭

Okay mommas I am struggling with losing weight. My whole first trimester I was told me losing weight was fine because I was sick ALL THE TIME, which I lost 17 pounds. I am now 15 weeks and I just stepped on the scale this morning and lost another pound I went to the dr Friday and my doctor said I couldn’t lose anymore weight from that appointment on I had to gain. Does anyone have any ideas that will make me gain or at least make the weight stick to me that I already have?im getting very nervous and confuse because I eat like crazy😩