Mama, I understand your worry, pero please see a doctor or go to the clinic today, those symptoms (swelling, hardness, warmth) need to be checked right away, hindi dapat maghintay. Hindi ito normal at kailangan ng proper check-up para malaman kung ano talaga. Don't panic about cancer muna, pero seryoso, a few of my mum friends had similar situations and ang doctor agad nila na-identify kung ano, sometimes it's something simple na kailangan lang ng proper care. The pain you're feeling is real and deserves attention, so please don't delay. Pag mainit at matigas talaga, go to your OB or nearest clinic NOW, especially if you're also feeling feverish. This needs hands-on checking, not just guessing, okay? You've given your baby so much by breastfeeding, take care of yourself too.