wart or callus?? or something else?

a couple of days ago i noticed a small hard bumb on the top of my pointer finger about 3 centimeters from the nail on the side with the finger print.

i bought saliac acid and have beeen using it and also go the freeze stuff

that area of my finger is now white but the skin does not look like the warts that come up on immage seach

i read that you could file a wart down so i used a nail file and now there is a red circle surrounded by the white dead skin

it looks like when you scratch a mosquito bite to hard.

is it wart

or a callus or something else

if it is a wart how can i make sure i am not spreading it

i know you are not supposed to touch it but if i alredy did is there anything i can do

i really dont want more

they are really gross

please help