Is chai tea safe to drink while pregnant?

I have some decaffeinated Spiced Chai tea (the brand is Bigelow) and I'm about 6 months pregnant. Is it safe to drink? The ingredients just say "Decaffeinated black tea, spices, natural flavors (soy lecithin) GLUTEN FREE" so I can't compare it to a list of things I found of non-safe tea ingredients.