How to clear up cystic acne without medication?

Recently I've been taking extra good care of my face. I've been putting warm washcloths on twice for ten minutes a day. Exfoliating once a week. And taking vitamins.
I have noticed an improvement in my deep under the skin acne. The only problem is now, I have a whole bunch of black heads just popping up.
What should I do?

Also How can I control my stress, because it gives me that deep acne.