You def have cystic acne. It is usually due to hormonal problems. I suggest you see your OBGYN and get checked out, make sure things aren't too serious.
I am 32 and started getting cystic acne after going off the pill. I really wanted to stay off the pill, but FINALLY after a year of cystic acne I waved the white flag and have gone on Dianne 35 (BCpill) I tried every herbal remedy, I ate a diet that would rival the purity of a monk's diet, I jogged 6-7 km a day, I took all the recommended vitamin suppliments etc etc but to no avail. I have been taking the pill for two months and my skin is improving a lot. But I am now left with scars both red marks and tissue loss (aka permanent scarring) I wish I had gone back on the pill like 6 months ago. But I was determined to get rid of my acne naturally.
So if you are getting cystic acne and are scarring you should consider getting your hormone levels checked and consider the pill.
Also, using salicylic acid (2%)or glycolic acid (8%) daily in a toner or lotion is a good idea as it helps your skin shed and prevents your pores from clogging.
And aloe gel/juice does not clog pores so you can apply it on the cysts to help prevent scarring and helps treat scars.
Fresh lemon juice mask for 10-20 minutes every few days is great for skin.
Also honey, apple cidar vinegar, yogurt (plain/no sugar/organic) and tea tree oil.
Taking vitamins like vit A, B complex, zinc, selenium, chromium, Vit E, D, Calcium & Magnesium, MSM and Vitamin C all of these are great for your skin and hormonal balance. As well, saw Palmetto, vitex, evening primrose and dong quai.
You may also want to do a candida cleanse. Candida builds up in our bodies and causes acne and a whole bunch of other problems. I suggest to do a google search on the candida thing. I used a product called *candigone and it worked well and I lost 5lbs while taking it

Good luck!