My leukoplakia of many years turned to SCC.
I had many negative biopsies over that time, continued to smoke and ignored the warnings.
Biopsy in 2006 came back positive and guess what... I stopped!
2 weeks in hospital having major surgery got it out of my system.
Please get that biopsy ASAP.

History Leukoplakia bx 8/2006 SCC floor mouth T3N0M0- Verrucous Carcinoma.
14 hour 0p SCC-Right ND/excision/marginal mandibulectomy 9/2006, 4 teeth removed, flap from wrist, trach-ng 6 days- no chemo/rad.
6 ops and debulking (flap/tongue join) + bx's 2006-2012.
bx Jan 2012 Hyperkeratosis-Epithelial Dysplasia
24cm GIST tumour removed 8/2013. Indefinite Oral Chemo.

1/31/16 passed away peacefully surrounded by family