Pregnancy caused all the calcium to leach from my teeth.

FACT The calcium in your teeth is strongly incorporated into hydroxyapatite  crystals and cannot be leached out!
Pregnancy is often a time of high acids in your mouth from morning sickness which can dissolve your tooth enamel, making your teeth prone to decay.
This can lead to tooth decay or ‘crumbling teeth’- entirely preventable and caused by neglect rather than pregnancy.
Tooth decay whilst pregnant is also preventable provided you maintain an excellent oral hygiene routine, keep sugar snacking to a minimum and see your dentist for a professional clean.