Postpartum increased milk with hard lumps may subside in a day or two, if accompanied by pus, it may take about a week. Increased milk is a normal phenomenon during breastfeeding, breastfeeding has been secreting milk, if it is not discharged in time, it may be blocked and form hard lumps. For hard lumps formed by just rising milk, you can use a towel to apply hot compresses and squeeze the milk out of your breasts until they become soft, which may take about 1~2 days. Mastitis, if left unchecked, may form abscesses with symptoms such as purulent nipple discharge and severe breast pain. This situation requires timely surgery or incision and drainage to drain the pus from the breast, and the recovery process takes about a week, depending on the doctor’s advice. Clinical advice is to empty the breasts in time to avoid milk stagnation, and consult a doctor for treatment if necessary.