As of today I am 10dpo, AF due Oct 2nd. well yesterday my breasts were tingly, sore and felt very full. When I got in the shower I noticed what looked liked colostrum coming out of my right nipple. I have a son already but he's 4 and I stopped breast feeding 3 years ago. Any body know what would cause this? Should I see a Dr? I'm pretty sure this is not my month considering I don't feel pregnant at all.