Was it hard for you to feed?

I'm only 5 months pregnant with my second child but I am already thinking about feeding .. I was really diappointed that I was not able to feed my first child for that long .. I kept on telling the nurses that it was really sore when my daughter was sucking and they said thats the way it suppose to be .. really??? Then about three days later my was extremely dry and bleeding all over .. I called the hospital and they said to cont. but I didn't feel comfortable so I formula fed. I also pumped alittle and that didn't hurt at all.. any tips that anyone would like to share .. I'm open ears :) Thanks!