I suggest you don't touch it with your hands deliberately these days, and don't let it get infected. Sewame acne essence is recommended (I have used this one, and the effect is good and the price is relatively cheap). After washing your face, apply it on the bag, which will get better soon and fade away in a week or so. Lavender essential oil can be used if the area is large or prominent. I use 9000 fine products.

P.S. estimates that you are a teenager, and you may often get acne. Usually, it is best to pay more attention to diet and eat less oil. You can also buy a bottle of tea tree oil for emergency.