Acne on forehead and around the mouth? HELP!!?

i get acne on my forehad really bad like a little twards my scalp!! and it wont go away! and i get acne around my mouth like the right side of my mouth i hav like 3 or 4 spots! idk what to do! how do i get rid of it?? and also, i got bit on the face, and i wanted to now how to get rid of swelling from a bug bite on your face. its like noticable and looks like a pimple! HELP!