Before the conception of the mini-mister, I had a couple of conversations with prenatal yoga teachers here, and many of them don't take students who are in their first trimester. I, however, continued to go to the 'normal' classes of the teachers I knew, and I didn't tell them I was pregnant; I just modified any pose I needed to. I am not recommending this to you, my dear readers. I've been doing yoga for 11 years and have training in prenatal yoga. If you've been doing yoga for a long time, and want to continue your practice during your first trimester, there are a few teachers (mostly Anglophones) that won’t have a huge problem having you in their regular classes, contact me and I'll give you some suggestions. If you've never done yoga before and you want to start during your pregnancy, I initially suggested you wait until 12 weeks, realized how absurd that was, and wrote a blog post about prenatal yoga in Paris in your first trimester. I have found only 3 studios and a handful of classes.
Despite my doctor(s) telling me to do as much yoga as often as I wanted to (I have a feeling they hear yoga and think meditation and stretching, not chaturangas and headstands), there are a couple of things I absolutely didn't do during my first trimester, no matter what. I did not take classes in a warm room, no hot yoga, no Bikram yoga. You need to stay fully hydrated, plus I had a problem with mild dizziness (vertigo) when I stood up from a forward fold, so I surely would have passed out in hot yoga! I did not take any classes where I couldn't keep my breathing deep and calm, which means, I didn't take any classes that were super-duper dynamic and/or twisty. Your baby needs lots of oxygen. And I did not attempt to do any new poses that I hadn't done before.
Twisting in the first trimester is a big no-no because it can dislodge the egg from the uterus, but since I do it every single day, and I continued teaching, I kept twisting, but made them very gentle and infrequent. I did not go to a class with a teacher who does lots of adjustments and who would twist me into a knot, and I did not twist myself into a knot. If I went to a regular class and chose not to tell my teacher, I twisted like I was trying to check out who was playing the sax in the metro. And towards the end of the first trimester, when I could tell my bump was getting a bit bigger, I didn't do any poses that put weight on my lower belly.
I'm now halfway through my second trimester, and my practice has completely changed, but I'll save that for another post. Perhaps when I'm fully through with it so you can get the entire story.