Hi, thanks for writing to HCM.
Based on the description, the bumps on the bottom of your feet could be a CORN
or a CALLOSITY.
Use of Poor fitting or ill fitting shoes is the commonest cause of both the conditions. Usually no treatment is necessary.
Steps to be taken to prevent or treat are as follows -
* Wearing comfortable shoes and socks
* Wearing nonmedicated corn or callus
* Gradually rubbing it away
* Moisturizing your skin
If you are concerned, approach a dermatologist
for further management.
Hope this information is helpful. Good day