b12 injections in early pregnancy Vitamin Pregnancy: What You Need to Know – NaturoBest Building a baby takes vitamin
Description
According to the National Nutrition Survey (2008), the average cobalamin intake of the German population, which primarily follows a mixed diet, is just above the recommendations of 4 g/day

I don't see the phrase "strict vegetarian" used very much but it's supposed to mean someone who follows a diet which excludes animal products
10.1182/blood-2016-10-569186 24 GreenR.AllenL

Discussing alternative therapies or having regular nutrient IV therapy and/or vitamin B12 injections can help