It is more likely that the ppd is making breastfeeding seem more difficult, than breastfeeding making ppd worse. Because you are posting on MDC, I will assume that breastfeeding is something you have researched and want to do. In that case, it would be foolish to give it up hoping for relief from ppd. Are you getting enough support at home right now? Have you found a person you're comfortable to help nursing?
Here's a link, HTH:
http://www.breastfeeding.com/helpme/...lc_ans100.html
Here's a link, HTH:
http://www.breastfeeding.com/helpme/...lc_ans100.html