Is it protected to bring Omega-3 Fish Oil Pills during pregnancy if they contain mackerel?

Okay, so I'm 5 weeks pregnant and know that Omega-3 fatty acid fish oil pills help near brain and eye development for baby if you take them while pregnant, so I bought some. I took it home and realize that it contains anchovy, cod, sardine, and Mackerel. I read that mackerel contains high mercury content and thats definitely one of the fish pregant women should refrain from drinking. But the bottle says that the pills were "molecularly distilled to remove pesticide, PCBs, and heavy metals." So do you guess they're safe to take while pregnant since they say they distill them to remove cumbersome metals (such as mercury)? I'm going to ask my doc later, but just wanna hear some opinions from you guys. Thanks ahead of time!
Answers:    Omega-3 is amazing for your newborn!(: Ask your doctor about other brands. I know at wal*mart they have Expecta, which is what I take every time. It's great.
And, they don't cost that much!(:

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