Aww sayang, jangan sedih dulu, breast lumps during pregnancy are actually quite common and most can be managed, tapi memang kena follow doc's advice sebab safety comes first lah, especially before delivery. A few of my mum friends juga kena buat minor procedures during pregnancy and they managed to breastfeed without major issues, so it's not a closed door! The thing is, even if one side ada problem, many mums successfully bf with one breast or a combination of bf + formula, and baby still thrives and gets all the bonding. You're not failing your baby by being realistic about your body, honestly, getting proper medical care is the best thing you can do for your newborn right now. Please talk to your doc about your breastfeeding concerns too, they can give you a clearer picture of what to expect after the procedure, and maybe connect you with a lactation consultant who's seen similar cases. You're already thinking ahead and caring deeply, that's a good mummy right there.