If this was a mild case of athlete's foot, which is a fungal infection of the skin on the feet, then you would probably have noticed some improvement with the anti fungal spray. However, one caveat is that sometimes the fungus can be resistant to these over the counter anti fungal medications, so failure to improve with over the counter anti fungal medications doesn't necessarily completely rule out a fungal infection.
However, I do think it is time to get your doctor
's opinion, since you have already tried treating this on your own without much luck. Your doctor can consider other possible diagnoses, other than just athlete's foot. These could include dyshidrotic eczema
, which is a form of eczema which causes peeling of the soles of the feet and can be quite stubborn and difficult to get rid of if you do not use a prescription strength steroid cream.
Your doctor will take a look and determine whether they think this is more likely to be eczema or athlete's foot. If the latter, they can probably prescribe you a stronger anti fungal medicine, since the first one you tried has not worked. If the former, they will definitely prescribe the necessary steroid creams for you. Good luck.