I had my c section in 2004 and im now 33 weeks and it hurts inside and out all the time esp when she kicks that area (baby currently breech) mu dr said its bc ok the old scar tissue and to use a heating pad or warm wash clothe to help with the pain. The heating pad actually helps as long as its wrapped and not turned on super high.
My c section was 6 yrs ago too and im 31w and mine is itching really bad
I have had 2 previous c-sections and never had pain in my scar, although I do have pain when I sneeze or cough occasionally in my lower abdominal muscles which my doctor says is most likely from scar tissue inside but nothing to worry about.