This is one of those times where you need to sit down with your doctor and have that conversation with him. Without proper nutrients you could end up nutritionally hurting your child which could effect development.
From BabyCenter.com:
Is it okay to lose weight during pregnancy?
Pregnancy is definitely not the time to go on a weight-loss diet: Restricting your food intake is potentially hazardous to you and your developing baby. But many plus-size women do lose weight during pregnancy without dieting.
In the first trimester, it's common to lose weight as the result of morning sickness: The nausea can diminish your appetite, and the vomiting can cause you to miss out on calories. But even so, your baby will get all the necessary calories.
Overweight women have an extra reserve of calories in stored fat, so as your baby grows, it's not harmful to maintain or even lose a little weight at first. What's not okay is losing weight because you're intentionally cutting calories (and, as a result, limiting nutrients).
At 6 months, your baby should not be getting less nutrients so that you can feel better about your size. Unless your doctor says that it is medically necessary for you to lose weight now, you are going to have to wait until your baby is born before you can start losing weight again.
You need to talk with your doctor.
Typically you cannot lose weight, if you are very heavy you can maintain weight.
The reason not to lose weight is because it realeases toxins, can set you up for a higher rate of preclampsia...etc is my understanding.
Unless your OB/physician has suggested you lose weight because the risks associated with your current weight outweight the risks of losing weight while pregnant, you should not be attempting weight loss.
Even women who were obese before pregnancy should still gain 11-20 pounds, according to the American Pregnancy Association.
If you are truly concerned about the effect your weight is having on your pregnancy, please speak to your doctor. Until you do, please don't try to lose any more weight.
You've gained 3 and a half stone in the past 6 months? Have you been tested for gestational diabetes?
A dietician is not a doctor, more importantly not an obstetritian.
What she said.
You need to check with the doctor that is providing medical care for you during your pregnancy. While it's unlikely anything detrimental will happen eating 1,800 calories a day, it's always better to check with an actual doctor.
Also, why are you so concerned about the weight gain NOW? Pregnancy isn't usually the time to attempt weight loss or start a new exercise regime. You have a mere 3 months left until you can lose weight without affecting the life of a baby.
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