During pregnancy, your blood is supplying oxygen and essential nutrients to your baby through the placenta and carrying waste and carbon dioxide away — which means your blood volume increases up to 50 % to handle all this extra activity. So, you need to drink more to support that gain. Drinking water can also help prevent constipation, hemorrhoids, urinary tract infection, fatigue, headaches, swelling, and other uncomfortable pregnancy symptoms. Aim for 8-10 glasses per day.
