Clove Bud Oil My Favorite Tea (Yogi Egyptian Licorice) Says Not To Use While Pregnant Or Nursing?!?

My favorite tea (Yogi Egyptian Licorice) says not to use while pregnant or nursing?!? - clove bud oil

I bought a packet of my favorite tea (Yogi Egyptian Licorice) and do not say that to use during pregnancy or breastfeeding, and I do not know why.

The ingredients are:

Licorice Root
Cinnamon
Orange Peel
Ginger Root
Cardamom seeds
Black Pepper
Cloves

He also says "natural flavors of tangerine and cinnamon oil"

Does anybody know why I did not do in order to endure them?