If I don't take my Adderall (dextroamphetamine and racemic amphetamine) everyday, I feel lousy and craving the drug badly. I guess I'm addicted. Without it I get very depressed.

Please seek out. care for these symptoms. Stimulants can decrease depressive symptoms - so it is important to know if you have an underlying depressive disorder.
Getting Clean. That lousy feeling and that craving do indicate that you have the disease of addiction. This disease can be treated and there can be a very healthy and happy solution to this problem. But, first we need to get you the appropriate help, a safe place to detox, and a place to learn how to treat this common disease. I bet your family doctor can help you get started or the local hospital has detox.