Orthodontic treatment can be accomplished during pregnancy, yet there are some concerns that should be addressed. Dental x-rays should be approved by your obstetrician. Obstetricians will allow digital x-rays during some trimesters of pregnancy with the proper precautions.
Also, some women are more susceptible to gingivitis during pregnancy due to the elevation of hormones. Special care can prevent problems, so the most important thing is to discuss your concerns with your obstetrician and orthodontist.
If you suspect you may be pregnant, and you are already in treatment, inform your care givers immediately. If you are currently pregnant, your doctors may recommend waiting the few months needed to begin treatment. Rarely does pregnancy result in the need to abandon treatment.