Perhaps a silly q given that most people might think you just need a boob but I'd like to be prepared for potential problems. What other paraphernalia might I need to help me with breast feeding? What have been your prized purchases? Things you wouldn't be without? What are nipple shields/shells/gel pads? You can tell I have a lot to learn... Lol Is a pump essential? I seem to get conflicting advice on this one! Any other tips greatly appreciated!