First start with making sure to only do the inversions you are most comfortable with. The risk of falling is much higher during pregnancy. As pregnant women we tend to be a bit off balance and have abnormal blood pressure. These (and more) can cause instability. So just be careful when you go upside down. You can use props like the wall or a chair to help stabilize yourself, just to be safe.
Also, if you decide to practice inversions, I would personally advise you to not stay in the inversion for very long. I love to do them to gain all the benefits of the pose, but I definitely cut back on my time upside down. So instead of staying in the pose for a long time, I do them more often and take them in smaller doses. Just a quick headstand can help take a headache away, loosen my tight shoulders, or relieve lower back pain, but staying in it too long could give me some indigestion and get me a little sick to my stomach.
If you want to play it safe and still practice, I believe the second trimester is the best. If you’re worried about blood pressure or hormone imbalance, avoid the first trimester when things are changing the most. Then practice through the second and then avoid it again in the third trimester when the baby is ready to get into place.
And just remember, listen to your body and do what you feel is best! If you feel no fancy work is needing to be done, try ‘legs up the wall’ by scooting your backside up against a wall and stacking your feet above your legs, and legs above your hips. This is great for helping ease any circulation pain, lower back pain, hip pain, and more. It is a GREAT place to be. OR if you do feel a more intense inversion is needed, get down on the mat and try it out. If it doesn’t feel right, ease up, and start again after that sweet baby has arrived.
IF YOU HAVE ANY QUESTIONS OR COMMENTS, PLEASE CONTACT ME.