I have recently had the results of a biopsy from my cheek. I have been told it's between stage 1 and 2, pre cancerous but some abnormal cells, but no treatment is required unless anything changes. I'm so confused!  my next check up is in 3 months. I am really worried that it might spread without me noticing any changes and I'm confused about why they would wait for it to get worse before they operate. My consultant has told me to contact him if I notice any ulceration or bleeding then they will operate. He did say that the danger with mouth cancers is that it can spread to the lymph nodes. 
This has been a shock as I really didn't think there was much wrong and I don't know what I should expect. 
Any help and advise would be appreciated, many thanks