Hi, don't panic, easier said than done right. I know, I've been there and thought I'd implode with the worry. It could be anything and if it is nasty, plenty of treatment available. Mine was 22mm, it was cancer, I'm now a year from diagnosis. I had a lumpectomy and radiotherapy and tablets as it was hormone fed. Anxiety will take you to dark places so try and keep yourself busy, listen to audio books, gardening, reading etc; once you know for sure either way, the panic will ease off. Fingers crossed for good news x