nursing aversion help!

Ok I am 33 weeks pregnant with my second son, I was not able to breast feed the first time but I intend to this time I'm actually very excited and nervous about it so I've been adding groups on Facebook, downloading apps, talking to people, looking up blogs the whole 9 yards. And the more I look into it the more I realize I have an extreme aversion to it. I become extremely agitated just at seeing a picture or a video even the face on a child that's feeding irritates me. It's actually much much worse if the child is over 18 just drives me nuts I get angry I get agitated I get irritated I don't want to be on whatever site I'm on anymore I have to close it out and collect myself and then wait some time and then go back and see if I can re-look at the tips and tricks that I'm trying to find. I understand that what I'm feeling is a very ugly emotion but I'm feeling it and I don't understand why I get that it's psychological I wasn't breast-fed as a child so I don't know if I'm a 26-year-old bitter Betty or what is going on but something is going on. I don't want to feel this way because it's an ugly feeling to look at a child being nourished by their mother and being irritated but literally just the look on a child's face that's feeding can send me off I'm not so irritated by seeing the nipple but I am irritated what's the child starts to feed. Help! What's wrong with me!