Neural tube defects, family history

[wifeymcwifeface1104]

We recently had a miscarriage in the family due to a NT defect, and I'm worried that as it was the DPs brother's it could be something potentially that's hereditary/in the family.
Should I get an extra prescription of Folic Acid just in case?
I'm taking Pregnacare Conception and I've jusy started taking another 400mcg of Folic Acid just in case...

Larger women need to take 5mg! I don't know if you're larger.

I'm overweight but not obese. So should I speak to the Dr about a higher prescription of it?

Worth asking I think. They will either say yes or no!