Advice please ?

I’m 28 weeks pregnant and work in a hospital as a cleaner -

I am on relief work at the moment as the job can be strenuous.

My friend works in the Childrens ward and was cleaning one of the isolated rooms as she thinks the child had chicken pox or something - she said he had pox like sores from his neck upwards...

She has had chicken pox and so have I but I was wondering even though I wasn’t in that ward and I was just around her today for lunch is there any way I could expose myself or child to chicken pox ? I know it sounds silly but just like to be careful! Thanks !