I'll be 35 weeks when I do mine, and I worry about it being so late. I did the a free online one to help me feel a little more prepaired :)
Thanks for the advice and suggestions!!
Baby center website has a free online class if your interested. They don't really teach breathing but its nice.
I went with my first around 6 months and did the online one with my second. It all depends what works best for you. You will have a chance to do a class, take your tours, and make your birthing plan without rushing. So I think you are fine starting now.
There's no rule saying when you can take them. I'm getting my certification in child birth education. I personally would completely understand the reason!