Hard lumps in breast

Chelsea • Marine wife ~ Mamma Bear 3/22

I’m getting really discouraged and need advice. I’m a FTM and EBF. My little girl doesn’t nurse more than 10-15 minutes each feeding but doctor assured me that’s okay because she has plenty of wet diapers and is growing. But in between each feeding usually 1x a day I get a painful hard lump of what I’m guessing is milk in one of my boobs and I have to wake her up to nurse it and massage it away or get out my pump. It’s painful and annoying so I’m getting really frustrated and want to give up breastfeeding. I don’t know how to stop this from happening everyday