Maybe you have acne?
I have had a lot of problems with severe acne :(
Get down to the doctors and see what they can do, I tried creams like you, then I tried the quinoderm (5% and 10%) as alijangra suggested, these did not work. I went to the doctors and the perscriped me a few different types of anti-biotics. Over the space of like 3 years, none of these have worked, and now I'm on the pill. And to be honest, that's not working either :(
Mines a difficult one, but obviously, some of these might work for you.
But if you don't find out, nothing will happen!