Cried through birth class

I had a two hour birth class at a local yoga studio today. The teacher made everyone start by thinking about their worst fears and then say them out loud to each other (so, great, more things to be scared of that I hadn’t even thought about). I just couldn’t get re-centered after that and I was choking back tears for the rest of the class, which seemed to be just about how “inevitable” birth is. I felt so scared and helpless throughout and still at the end. I wish I had just walked out when she asked us to start with spending a couple minutes thinking of our worst fears... I have even more anxiety now and it makes me feel even more incapable and unprepared...