I started drinking preg omega plus and i skipped my period. is it normal?

Some thoughts...: Pregnancy is the most common cause of a missed period in women who are able to become pregnant. If not pregnant, other causes of a late or missed period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (especially birth control pills), hormonal disorders, etc… Prenatal vitamins do not cause a period to be missed.