First of all, congratulations! I am literally writing this from the hospital room where my 3rd child was born yesterday. Do not worry, your baby will be fine. Botox has been in therapeutic use since 1968 without any reported issues in pregnancy. A publication looking at a small group dealing with this also showed no issue. I know several women personally who are in "the business" and continued Botox through pregnancy, although that is not the norm. Any respectable injector would never treat a pregnant patient, but most would agree that doing so would likely be safe. The way that botulinum toxin injures infants has to do with paralyzing the diaphragm and causing breathing issues, but you are doing that for you baby right now. Relax and enjoy!