My toenails on my rt foot have gotten thicker but not yellow. could it be fungus? i had an injury to big toe and now that nail and the others arethick

Fungus: Yes, it's a possibility. The best way to get a diagnosis is a laboratory specimen of part of your nail. Other reasons for nail thickness is scarring of the nail bed.

Could be fungal: Or maybe not. The idea is to have a piece of the nail tested. A pathologist can identify fungus vs thickness secondary to trauma.

Could be.: Could be fungus or trauma to the nail causing it to change. Have a doctor take a sample and send to a lab for identification. If it's a fungus, your doctor can help with treatment options.