Genital warts can appear for the first time after being infected or will get worse during pregnancy, since immune system tends to be weaker while pregnant.
You may find that your warts grow quicker and larger than previous episodes.
HPV can be transmitted to baby both before and, possibly, during birth in women who have an active case of genital warts.
Genital warts located inside the vagina can block the birth channel making a vaginal birth impossible or may bleed during delivery, so, the cesarean section is usually preferred.
Treatment during pregnancy is usually postponed because spontaneous improvement often occurs after delivery, and when treated during pregnancy, cryotherapy and laser removal are the preferred treatment methods.
Baby that got infected with HPV can develop genital warts or warts located in the mouth and throat, leading to breathing difficulties.

Best wishes!
Marija