Hi Jillx,
I was never actually addicted to adderall so I can't offer useful advice but I do want to encourage you to stop using it beyond the amount that was prescribed to you.
I never had a prescription for it, but I did have a friend with a (legitimate) prescription. It was a ton of fun until one time it made me feel like my chest was about to rip open. Doesn't seem like you ever got that reaction, but it would be all for the best for you to deal with it before you do...
All the best to you.