This was me 18 months ago:
www.mumsnet.com/Talk/breast_and_bottle_feeding/1144365-Can-I-stop-my-milk-production-DS-2-4-weeks-Desperate
Thanks to the help I received on Mumsnet, National Breastfeeding Helpline and peer support groups, I did continue to breastfeed and am actually still breastfeeding DS who is now 18 months. In fact, I am now a peer supporter myself and help women in the same position as I was.
I just wanted to post to update as I had a positive outcome thanks to these resources and just want to say that it can be so hard in the beginning but you are not alone! I felt so isolated in my pain and guilt at the beginning, but thanks to the support I received I was able to continue feeding without pain, long-term. So if you are experiencing difficulties breastfeeding please please do talk to someone, the helplines are staffed with amazing counsellors and your local peer support group will do everything they can to help you too.
None of this is a stealth boast at all, I sometimes feel astounded that we are still feeding but mostly don't even think about it, it is such a normal part of our lives. Hope this post can help someone out there in a small way. :)