Pain at incision 8 months after c-section?

Had a baby in October and my incision still hurts after exercise. Never fully recovered from first child (aug. 2008), but second time seemed to heal up better and faster. Even though pain isn't constant like with first, I still get a burning type of pain along incision when I exert myself physically or sleep in the wrong position. Talked to my doc after first c-sect, and he didn't seem concerned so I didn't bother to mention it this time. I know I should see another dr, but I just wanted some advice (preferably from experience) as to whether or not this seems normal. Thanks in advance!