pregnancy right after Dr Bernstein diet

I am thinking about dropping the 10 - 15 pounds I gained during pregnancy by going on the Berstein diet. My son is 10 months now and I'm no longer breast feeding but we would like to have another baby pretty soon. Therefore, I need to know if the diet has any negative or lasting effects, even for a short period, which may harm my chances of getting pregnant or effect the pregnancy if I get pregnant immediately after finishing the diet or if I get pregnant while on the diet by some chance.