My nipples are so sore, just running your finger across it in the wrong way will even hurt. My boobs are tender & feel heavier then usual. I don't know if their growing, if I might have breast cancer, or if it's symptoms of being pregnant, I'm only 16 & will be 17 in december. It may just be growing pains but my boobs are already big. I'm already in a DD. I may be thinking to much & that's all it could be but I'm scared & have so much running through my head.