By all means keep your skin clean, but also make sure as someone else suggested you're drinking a lot. Exercise will help get rid of the impurities as well, but mostly don't stress too much, I know that's hard. I think it's hormones mostly, which are rushing around and causing this. A friend of mine had this and it will settle down, at the latest after the birth (although I'm sure that is a long time to wait for you!) Swimming in the ocean helped for me when I had teenage acne, so it may work for you as well.