Can you take too much fish oil when pregnant?
Several human studies have reported decreased gestational length and/or fetal growth retardation [35,36,54,59,69,78] and increased infant morbidity  from high fish oil consumption by the mother during pregnancy.
Is 1000 mg of DHA too much during pregnancy?
] recommends a minimum intake of 200 to 300 mg of DHA per day and up to 1000 mg during pregnancy and lactation. In the past 10 years, 200 mg has become a standard addition to many prenatal supplements.
Is 1000 mg of fish oil OK?
Many doctors often recommend 1000 to 1200 mg of fish oil, because that amount of fish oil contains the total amount of Omega-3s the doctor wants you to consume.