Hello kirsten,
you are not alone in your quest for smooth skin, and i'm going to share what i've tried with you. For starters it works. If you are spending loads of cash on medication, anti acne soaps and creams, stop now! The miracle cure to good skin lies in what you eat and what you eat alone.
It is important that starting from now you stop eating sugar, white grains and flours (except basmati rice), potatoes cooked in any form (except sweet potatoes), animal milk and milk products, animal fats, salt and over cooked food or processed foods.
Start spending your money on vegetables and lots of it. I can almost swear that if you eat a complete vegetable/ salad meal with greens especially baby spinach (without breads and such or meats) either at lunch or dinner, you'll be trully amazed at how clear your skin will become in a short while. The only other thing to help you along is a time realease vitamin and mineral tablet.
Have fruits in moderation, walk a little bit more and drink water before or after every meal. Lastly if you're on the pill or any hormone based contraceptive, stop using it now. It will bring on worse problems for you in the future such as cysts, lumps, abnormal cells when you have a pap smear etc.
All the best and good heatlh to you.