Tmi question

Has anyone been told they had genital warts while pregnant but they know 100% it wasn't from sleeping around or their partner sleeping astound? I'm 26 weeks pregnant and was told today I had it, I inow for 100% it wasn't from my husband stepping out on me or the other way around. I was told I may end up getting c section so it don't pass on to him. How else can you get genital warts? Did you still have a vaginal birth? Did it go away on its on?