hi - i am 30 years old, and recently found a lump on my nipple. i went and had it checked by my GP, who said it was a non-cancerous tumour called a fibroadenoma. i haven’t had any further investigation to confirm this (just the breast exam she did) - is this enough to diagnose this? i don’t mean to sound like i’m questioning her judgement or anything, but i was very scared before the appt and just want to be sure what she’s said is right…