Thanks for your query.
You seem to have developed a lesion of acne
cystica over your nose.
You should stop all local and home treatments of the same. You might do more damage to it.
You need to consult a dermatologist
so that proper oral and topical antibiotics can be prescribed for the same.
Avoid touching or squeezing the lesion as it will lead to more scarring.
Hope it helps
Dr Geetika Paul