The doctor will tell you to take prenatal vitamins and DHA which is Omega 3 which promotes healthy brain development and eyes and nervous system. What they fail to tell you that if you are taking these daily that you need to stop taking them at the end of your pregnancy because it prevents you from going into labor. Omega 3 are used to help prevent preterm labor, PMS menstral cramps in non pregnant women and relieve joint and prevent inflammation. So basically it doesn't let you thin out or let your cervix dilate. I wish I would have known this earlier because I am now 38 weeks and normally by now I have thinned out or dilated by now and never had a pregnancy past 38 weeks with all 3 of my other pregnancies that I did not use Omega DHA pills with.