Four days ago I tripped and landed against my bike, the handlebar end went into my breast. It hurt, obviously! The pain was fairly deep in the breast, and the bruising has taken a few days to appear. The whole thing has been sore and painful, but it was quite a bash, so I wasn’ surprised. Now I’m getting occasional shooting pain, is this a worry ? I’m not breastfeeding or anything. Friend has also “helpfully” mentioned that knocks to the breast can trigger breast cancer, so as this is still so painful and was a bad knock, I’m also really worrying about that.