Thanks for your query
Dont worry too much .... Do not squeeze or scratch the pimples
.Keep your skin clean,Have healthy diet & lots of fluids.Avoid too much oily foods.Apply topical Clindamycin
gel over the pimples for a month.You can use topical tretinoin over the comedones [ but be careful as sensitive persons develop burning sensation and redness
after application]..and use oral Isotretinoin
for 4-6 months [but always under supervision of your dermatologist]
Hope this helps you.
Stay in touch with your dermatologist.
Take care :)