What Tea Can I Drink

Hey so I am a very big tea drinker. I don't drink coffee but I drink tea, around 3-4 cups a day. Morning, lunch, dinner, and sometimes one more right before bed. I saw on the ovia <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">pregnancy app</a> that most teas aren't good for you while pregnant. This is my first pregnancy, I'm around 4 weeks and I just want some tea 😩 what tea Can I  drink ladies ? Helpppp