re: Anyone here have exp with breast cancer? Have aome?s.

Never had a child. She has this thought in her head that someone once told her that caffeine could cause it (she drinks an ice coffee every day and a Diet Coke if we are out to eat) and that's probably all it is. I'm a lot more concerned than that being how big it is and how hard the lump is. I guess my only reason to not panic (and I'm kind of panicking) is that it has come out of no where. It wasn't there , to my or her knowledge , a week ago. It's like it all of sudden appeared. I don't know if that is how cancer goes or if that's a tell that it is not serious at all. I'm forcing her to go to the Dr tomorrow , just wondering if anyone had any advice that had been through something like this before. Thanks. Appreciate the input.