broke out on face

could anyone help me with this. i just broke out on my face. not pimples, but red blemishes or something, they look almost like pimples. they itch, a little here and there. it just happened recently(2 days ago). how do i get rid of it. i only have them on my cheeks. anything i can take to get rid of them or put something on them. i'm clueless.. please help. ps: i have been living at my parents house for the past week. they just had a lot of construction done. so a lot of dust and such things have been flying around. also i have had a lot of stress lately. everything is now coming to a stop. still want to know how i can get rid of it. i look like i have really bad skin.