Always tell them your pregnant
Yes because certain meds are harmful to your baby
I haven't taken any meds for my braces since I have had them....
It's still better to let them know in case they try to give you something or need to do something to you. Just let them know. .
I always let people know im pregnant ever since I went into a bath and body works kind of store that had the message chairs and told them and turns put after I certain point in pregnancy those chairs and an make you gp into labor early. Always better safe than sorry