Hi M. H, I can only imagine how you must feel. I've had acne my whole adult life and have been on many different medications incl Differin and Ortho-tricyclin (birthcontrol). The pill did help my acne, but as soon as I got off it, it became worse.
My advice may not work for you. But before I landed on what helped me, I had researched extensively.
Here is what helped me. I basically concluded similar to what you've noticed - it must be hormonal. So I need to help my body have the right hormonal balance through diet.
I make sure i drink plenty of water (6 glasses, addt'l one per coffee cup - I love coffee), and have regular bowel movement, which means you have to keep your diet very strictly full of fiber, veggies, fruit. I also started working out and watch my sleep. I had been taking the following suppliments: zinc, B complex formula , gammaa e complex. I do not take these now, but was for the first 3 years after the pill.
It took me about 6-9 months to notice changes. I do not know if the combination of the above or one particular thing helped. I stil have some blackheads, but I got rid of the inflamed pimples that I always used to have on my face, at least one at all times. I also use Origins lotion. I also noticed correlation as my bowel movement not as consistent and blackheads seem to get worse. Good luck to you. Oksana V