You'll feel a little itchy, and when you look in the mirror, there will be a slightly red spot. That's what happens to me, and it usually ends up a pimple... If you find it at night, then you should put medicine on it before it becomes a large pimple. If you don't have medicine, cheat and use toothpaste. :) hope I helped!
You should avoid touching your face with dirty hands and also wash your face at least twice a day. In addition, you should wash your face gently with a mild soap and warm water. Furthermore, avoid popping the pimples and if you wear makeup ensure you remove it before going to bed.
You will feel a little bit itchy, hurt and your face might be red. You mostly have it when you have your period. Just use smoothe-E or something really gentle to your skin and everything would be fine :)
I prefer using homemade beauty remedies,here are two suggestions: use lemon juice, dab a bit of it on the pimple and leave it till morning, it really works! Also you can take equal quantities of rose water and lime juice and apply the mixture on the affected area. Leave it on for 20 minutes.