Units) or barangay health centers doon nag-offer ng free vaccines including Tdap for pregnant, kailangan mo lang mag-inquire directly sa nearest health center mo or sa OB mo, they usually know kung saan available! A few of us here in Metro Manila got ours for free through our barangay, so it's worth asking talaga, basta makipag-coordinate sa midwife or doctor mo para sure na available at safe timing para sa pregnancy mo.