Weaning and dimpling?

My son has recently weaned and has not nursed in a few days. (He's 17 months and we weaned very slowly.) I am feeling a bit full, but I'm not miserable or experiencing any clogged ducts that I know of. I have noticed what appears to be one spot of dimpling on my left breast today and was wondering if this is normal or related to his weaning and something that will go away when I dry up? Or is this something I should be concerned about? I know dimpling can be indicative of breast cancer and now I'm kind of freaking out. It was not there before he stopped nursing.