can't do it anymore...

breastfeeding has never been easy for me. I feel dirty all the time, constantly having a mouth on me, being grabbed at, and always feeling like I'm a prisoner in my own skin. my skim crawls thinking of it. I want to switch to formula, but I know my SO would be against it and I don't know where to start on how to switch. I feel awful for being so weak at this. I just can't do it anymore.