Thanks for the query,
You might be suffering from a sebaceous cyst
Usually it is asymptomatic,
But sometimes white cheesy material comes out of it,
You dont need to worry much,
But better to get it removed.
Please meet a dermatologist
for final diagnosis and treatment
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.