I am 30 years old and currently breastfeeding my first child, born this February. In my first trimester of pregnancy last year I suddenly developed a lump in my right breast. This lump has been monitored by Kaiser. To date, I've had 4 ultrasounds and a biopsy with the following findings. Ultrasound #1 (pregnancy, 2nd trimester) - solid lump, 3.5cm. Report said "probably a fibroadenoma." Ultrasound #2 (6-month follow-up - 4 weeks postpartum) - complex cystic mass, 5cm. Radiologist said biopsy is needed because of the changes. Biopsy (6 weeks postpartum) - core biopsy was intended, but the radiologist decided to first try to aspirate. While/milk-like fluid was extracted from the lump and then discarded with no analysis. The lump was deemed "probably a galactocele." Ultrasound #3 ( 3-month biopsy follow up - 4 months postpartum) - gross cyst with some solid components, 4.5 cm Ultrasound #4 (last week, 6.5 months postpartum) - mainly solid lump, 5.2cm. The lump showed no blood flow, so the radiologist assumes it is solidified milk. In the past 2 weeks, the skin over the lump became red. The OB prescribed antibiotics which aren't making any difference. I have had no fever or other signs of infection. The lump itself seems to be advancing toward the middle of my chest in the direction of the biopsy site. The redness has now been present over the lump for over a week. I am really worried about this lump and the redness over it. Does this sound like IBC? Thank you!