PN,
Please bear in mind that I am not a medical practitioner and you should not misinterpret what I offer as medical advice. Consult your ob-gyn to determine what is correct for your pregnancy and your path.
Fear and creative force do not typically coexist very well. Try to keep your fears at bay and your mind and life calm and nurturing - not just to conceive but through to term.
Asana and pregnancy will generate many answers from many quarters. What I share comes from the perspective of Purna Yoga™, the yoga in which I practice, train, and teach. In this lineage safety comes first and we work diligently to minimize the risk while still offering students the myriad of benefits derived from the postures. So I am telling you what I believe to be safest. Others will take risk and you may do the same if you wish. And that may be perfectly fine, or not.
Pregnancy and yoga follows the trimester system. How convenient, right
In the first trimester please focus on containment and avoid open pelvis poses. A very, very gentle mulha bandha is appropriate but avoid any running or jumping as well as Badha Konasana, Vira II, and Vrksasana. Do not, during the course of your pregnancy, take weight on the belly. No prone postures, therefore you may avoid forward bending in Virasana, it compresses the abdominal cavity and encroaches on the developing fetus.
I would avoid halasana throughout especially if you’re the sort who does the pose flat on the floor rather than on props. Sarvangasana is “okay” but please have someone right next to you watching so that you can come down and out of the pose in a mindful. calm, planned fashion. Uttanasana is best modified as Ardha Uttanasana with hands at the wall. That is more for comfort than a safety issue. The same is true for Adho Mukha Svanasana.
As you approach the third trimester, embrace the concept of opening. No Mulha Bandha from there until delivery please. Open pelvis poses are very lovely but you may need the support of a teacher, friend, or spouse, not to mention a prop like a bench, chair, wall, or bolster for comfort as baby by then will be a bit heavier and mommy and baby need additional nurturing.
But please…once you conceive go to a sound pre-natal class with a well trained teacher. There are so many ways an appropriate yoga practice can support you through child birth.
gordon