Breast swollen engorge

Hi all, I am a new one week old mum. I didnt breastfeed my baby when she was born last week two days in the hospital. She refused to latch. My breast is very hard, swollen and hard. When I back home the 3rd day, I pumped milk for her. Roughly 6 to 8 times. I massage my breasts with warm water before each pump and put cold cabbage after pump. Till date still very swollen. I very worried it will lead to complications. Any good advices for me? Thank you