Your geneticist is the only professional who can answer these questions.
We recommend that you meet with a genetic counselor to discuss the risk of recurrence for spina bifida or other birth defects within your family. A genetic counselor is trained at assessing the risk based on personal history, family history, and any applicable genetic and non-genetic tests results. A genetic counselor can also review the implications of MTHFR gene variants and recommendations for before and during your next pregnancy.
You can find a genetic counselor at the National Society of Genetic Counselors website or through companies like mine, AccessDNA. You can find more information on spina bifida at AccessDNA as well.