Ay, 12 days postpartum rashes can happen talaga, mama, usually from sweat, heat, or the fabric irritation from all those pads and tight postpartum wear kaya maraming kami na nag-experience nito! But since it's a rash and you're still very fresh from delivery, better to have your OB check it out just to be sure, okay? It could be something simple that needs a different soap or fabric, pero it's better to rule out anything else with your doctor, lalo na ngayon na kaya ka pa lang bumubuo after birth. Hang in there, mommy!