Hay mama, I feel you, ang sakit talaga ng cracked nipples, especially mahaba na ang breastfeeding journey mo! The white circle and bleeding sound like cracks or maybe thrush, kaya best talaga to check with your doctor or LC (lactation consultant) para ma-rule out kung ano talaga, pero in the meantime try adjusting baby's latch, make sure buong areola ang nasa mouth niya, hindi lang tip ng nipple. I swear by Mama's Choice Nipple Cream para sa healing, it's pregnancy and breastfeeding-safe so walang worry, and it really helps with the pain and cracks, game changer talaga! Also try nipple shields kung kaya niya, and express milk para mag-rest ang nipples mo every few hours, you're doing great