Pregnancy is a very delicate situation for any woman when she needs intense care and nourishment. The sound waves and radiation created from any cell phone causes the production of heat which is harmful for the pregnant woman. The heat excites the molecules and causes a harmful effect. The heat thus created from the radiation of the mobile phone causes excitement in the cells of the pregnant woman which may be harmful to the baby in some situations. Thus it is advisable for pregnant women to abstain from the use of mobile phones during their pregnancy period. The lesser you use it the better it is for you.