Centre, or even private clinics kat Shah Alam sebab ramai yang offer prenatal classes now. My mum friends kat sana mostly dapat through their gynae's referral or by calling hospitals directly, sometimes free sometimes bayar sikit je. Best approach is tanya your OB/GYN dulu, they usually know best options near you, or check Facebook groups for Shah Alam moms, they're super helpful with local recommendations!