Family planning advice. If it's a no.

Dear Doctor I have a 4.5 year old daughter and am confused if I should plan another baby. I really want another baby but the only thing making me step back is breast feeding. In my first pregnancy, since I was a new mom I wasn't aware that my nipples are not normal (inverted nipples) because of which I couldn't breastfeed my child. By gods grace she had no trouble with formula and is a healthy child touch wood. At that time I was unaware of my nipples and the related difficulties but now that I am aware I will not be able to breastfeed,should I go for another child because for me baby's health is most important than my desire to see my daughter have a sibling. Need pediatricians honest opinion even if it's a No.