Hi mama! Most of my mum friends did theirs around 20-24 weeks when baby's features are clearer and mas cute sa screen, hehe, though honestly some waited till 28-32 weeks pa because mas developed na talaga ang baby. For Taguig/Pasig, I'd suggest asking your OB for referrals kasi they usually know which clinics have good equipment and staff, plus mabilis lang sila mag-recommend ng trusted places sa area na alam nilang maganda ang results!