Feel horrible

I yelled at my baby. He is refusing my breast. He just seems to HATE it. He will start to suck then stop and scream. I can distract him and get him to nurse for a little bit but he won't eat much. I feel like he doesn't need or want me. This is the 3rd day it is happening. It was ok over the weekend because I had my husband for support. He is 13 weeks old and breastfeeding has gone perfectly well up until now. I am so ashamed and upset.