Breast Fibroadenoma at 48?

Hi everyone, thank you for taking the time to read my post.

I found a hard lump adjacent to my left nipple last week and have been referred to the breast clinic, appointment is in 9 days. The GP wasn’t able to give any advice on what the lump might be, and I totally understand that. The notes say hard lump 2 - 3cm; hard but not tethered.

My question, while I chew my nails and endlessly Google, is how likely is a fibroadenoma (for the first time as far as I know) at 48? I haven’t started menopause yet (as far as I know, no symptoms apart from the usual mid-life anxiety lol) and still have fairly regular periods.

Anyone with experience of a fibro around my age, or any general experience of a fibro much appreciated.

Thanks All.