Yes, it is safe to drink decaf cappuccino while pregnant.
Even though there are no special guidelines on decaf and pregnancy, low levels of caffeine are healthy for pregnancy.
How Much Decaf Coffee Can I Drink While Pregnant?
Technically, you can drink up to 100 cups of coffee while pregnant.
It is because a decaf cup of coffee contains around 2 mg of caffeine and the caffeine intake limit during pregnancy is 200 mg per day.