M.F.
I breastfeed for 2 years and never experienced anything like what you are describing, and never had any of my breastfeeding mom friends describe anything like that either. I would call a lactation consultant (usually free at the hospital you delivered at) or La Leche and get there opinion.
Some Doc's just aren't breast feeding friendly ( I ran into one when I had to go to the ER for a kidney infection when my daughter was 7 months old).....definitely get a second opinion.