Based on a Canadian study in Toronto, toxicosis during pregnancy contributes to the healthy development of a fetus. For example, morning sickness and headaches are both a result of the defense mechanism that protects a fetus from harmful toxins. So, these unpleasant symptoms are suitable for a woman’s health.
But, symptoms like hyperemesis (excessive vomiting) and severe stomach pains are not as healthy. So, in this case, you should visit your doctor immediately.