Pet rodents in pregnancy!

Paige • 21 , Baby boy #1 Nov 15 DARTFORD
I have just heard that pregnant women should not come into contact with any type of pet rodents during pregnancy as if the are carrying a certain bacteria It can cause miscarriage or birth defects! 
I am freaking out as I have 2 guniea pigs and 2 chinchillas.
I don't know what to do ? 
Advice would be appreciated.
Do you have rodents and had a helathy baby ?