Will accidentally swallowing mouth wash affect my baby's growth if i am pregnant?

No: As long as you only swallow a small amount it should be harmless to your baby..... This is of course dependant on how often you swallow. If you always swallow mouthwash every day it can be an irritant to your body pregnant or not. I am assuming you mean you occasionally swallow a bit of mouthwas.

No: I would not make this a habit but a one time ingestion of mouth wash will not have any harmful effects.