How do I stop my face from breaking out?

I am a teen and recently my acne has pretty much totaly cleared up, thanks to a new cleanser. I wash my face twice a day minimum and moisturize too.i only wear makeup when i go somewhere, and i have lately. but it hasnt bothered my skin untill now. the weather has been hot and muggy lately, in case that effects it. So all of a sudden i wake up and about 20 little red dots are ALL over my face. Help!