Just phoned hospital as I'm a PITA and I know it 
They had sent my results but they haven't got to me yet. The lump is a fibroadenoma, so completely benign, and they don't need to do anything further. Tank feckety feck for that, I'm so relieved I had a little cry 
They also say because of my family history (which is quite bad) they would like to refer me to their family history assessment clinic to help them decide if I should be put on a more regular programme of mammograms than the regular one (I'm ten years off the age for 'officially' having my first).
Am crossing everything and hoping the best news for all others waiting today x x x