Dieting & losing weight while pregnant

Mandi

Had a positive test on Saturday ..made my appointment today and nurse told me my BMI is too high that I wouldn't be able to stay at their practice, I'd have to be referred to go to the city to doctor appointments and even delivery (1.5 hours away about). I'm terrified.

I asked if I can try to lose the weight before this first appointment so I can be under the BMI where I can stay in their practice. She said I can definitely lose 10-15 pounds in a month and it would be safe.

Have any of you purposely tried and lost weight while pregnant?? Is this safe ? What are the risk factors ?