Hi Mrs Wong, btw I checked with Kandang Kerbau Hospital earlier they do not offer yoga class.
I saw 1 of the mummy sharing this from other Month thread (July 2014) for Prenatal Class.
"Masters Yoga at 88A Tanjong Pagar Rd; their package is really quite reasonable $190 for 10 classes... easy for me to go after work...got free trial too."
Here the website Prenatal Yoga Singapore | Masters' Yoga Sadhan
Any mummy keen to sign up for Prenatal Yoga Class?