How old is Sophie now? I had heaps of problems with breastfeeding in the first couple of weeks once we got home. She just wouldn't attach properly and the more I got frustrated the worse she would get. I was in tears one night almost having a break down. Went and borrowed a pump and expressed some for her. Then once she had settled down a bit I tried her on the boob again. Helped a little bit. The stronger they get the better they are at feeding. Elly hates the bottle now but still has her fussy moments at the boob.
As hard as it is at the time, just try to relax. Hand her to hubby while you calm down then try again. Hang in there. It's worth it once they get better at it xoxo