Girls, I really want to share my secret ? with which I don't know how …

Girls, I really want to share my secret ? with which I don't know how to cope, it doesn't stop me from living, but I'm afraid to give birth because I don't know how I will feed the baby, I have an ingrown nipple on the right side, maybe someone has dealt with this problem, tell me how to do it. I just don't understand how I will feed the baby, they say you can't breastfeed one at a time, you need to alternate.