| "When a pregnant woman lies flat on her back, the enlarged uterus may press on the vena cava. The vena cava is a large vein that returns oxygen depleted blood to the heart. This pressure on the vena cava reduces the flow of blood returning to the heart which in turn lowers your blood pressure and can cause dizziness, pale skin, and clamminess."
So do you think this has an effect on the baby or is just to stop us from feeling poorly?? I wasn't told not to do missionary and assumed would be ok if was not uncomfortable? Bit worried now. | 
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