Welcome to healthcare magic forum
Thank you for your query
i understand your concern regarding your skin problem .
You need not to worry about it.
It look like infection of hair root only or small boil.
you need to apply good antibiotic cream over the affected area.
Small hard spot is due to healing process and do not press or popped it.
you should wear full cloths and avoid tight one.
bette to consult dermatologist
if you do not recover well in a week.
I hope I answered your query