Suryanamaskar is considered to be a comprehensive practice, with multiple benefits. The practice can be modified to suit the structural, physiological as well as the hormonal changes, an expectant mother goes through.
While performing Suryanamaskar during pregnancy, it is of epitome importance that one is supervised by a trained expert. One should not feel any stress whatsoever in the abdomen area. Hence, by default, position number 6 (Ashtanga Namaskar) and position no. 7 (Bhujangasana) is skipped from the series. Rest of the 10 postures can be performed as is. However, as you begin to advance into your pregnancy, you will need to make certain adjustments in performing even most of the postures. For example, your legs should remain apart in Namaskarsana (position 1). This will help you maintain balance in position no.2 (Hasta Uttanasana) and ensure no strain on your abdomen while moving into position no.3 i.e. Uttanasana. In Ashwasanchalansana (position 4), the right leg which stretches to the back should be slightly to the right, so that, it does not does not interfere with the right side of your abdomen and at the same time increases the space in the right side of the groin making that pelvic area stronger and vice versa while performing with the left leg. With further progression in pregnancy, bringing the leg forward in Ashwasanchalasan (no.9) as well as Uttanasana (no.10) could be slightly tricky as the big tummy becomes an obstruction. Simply push your hips towards the ceiling (this will bring you on the toes and push your body weight forward) and then move your leg forward. This dynamic practice is multifaceted in its benefits especially during pregnancy.
Apart from the above, innumerable asanas (modifiable & adjustable as per changing shapes of the body) can be practiced to maintain the mobility of joints, improve blood circulation to the pelvis, and strengthen the spine and the reproductive system, thereby preparing the muscles for child birth. Other notable benefits of Yoga during pregnancy:
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