Chicken pox

LJ • Baby girl born Feb 19, 2015 and second girl born Jan 20, 2017. Baby #3 due in October!
I'm a nanny for two little boys who may have chicken pox right now. I'm supposed to watch them for the next couple of days. It looks like I was vaccinated at some point in my life and I am currently almost 12 weeks along. Knowing the risks are extremely minimal since I have been vaccinated, should I be around them right now?