i'm sorry you're experiencing this. unfortunately it's impossible to diagnose a skin ailment without a physical examination. i suggest you make an appointment to see your primary care provider. he or she can look at the bumps and tell you what they are and whether or not they need to be treated. weird bumps on the feet aren't unusual because the feet take a beating from walking and get exposed to all kinds of viruses and bacteria that may be lurking on floors in carpets and so on. fortunately most of these bumps aren't serious and don't cause much harm -- other than looking funky! your primary care provider can tell you what's going on and refer you to a foot doctor if necessary. good luck!
i have yellowish bumps on the instep of my feet