Herbal tea: Yea or nay?

Ttc going on 5 months. It was so hard bringing my coffee intake to half a mug in the morning (I'm usually a chronic coffee drinker all day long). To trick myself, I've been drinking celestial seasonings tea instead. Nothing too crazy, a cup in the am and a cup at night. Just the fruit zingers and citrus morning tea (No more. Sleepy time tea as I heard that was bad). Is this cool? Or do I have to quit that too?