Hi mama! Hindi ko sure exactly kung anong specific day ang OPD for pregnant patients sa PGH kasi schedules naman nila vary depending sa department, but best na tawagan mo directly ang hospital para sa exact schedule, usually they have a dedicated maternal and child health clinic na may fixed OPD days. One of my mum friends went there before and she said mas mabilis kung mag-inquire ka in person or sa phone kaya they can tell you right away kung kailan ang next available slot for you!