Hiya,
I just want to give you a bit of moral support. I had pain problems with my breast feeding up until dd was 10 weeks and understand how dispiriting it can be when things are tough.
Have you thought of seeing a breast feeding consultant? Mine turned the breast feeding around for us and dd is now 8.5 months and the bf is still going strong. I'm sure they would be able to help you with your situation too.
Best of luck