First off, it is spelled Adderall not Adderal.
Secondly, I HIGHLY suggest not doing this. I consider myself a pro with all of these types of medicines because I have been prescribed everyone out-to-date.
I had this same problem last year and I did what you did, which only resulted badly. You think you can handle yourself and all is fine but then in a week or just a few days, you'll be throwing up non-stop and you feel literally like you want to die. It is
awful.
Do what I did and go to your doctor about this. Well first, talk to your parents/legal guardian and tell them that you feel as if you would be able to do better in school and in life if you were prescribed ADD/ADHD medicine, daily. Then go to your doctor and say the same thing. They will give you and your parent(s) a written test along with different tests for you to take. These mainly are to see what your heart rate is like on the drug. They have to do this so they know what kind of medicine to prescribe you because trust me dude, there are thousands.
Anyways, once you are prescribed the ADD/ADHD drug that suits you best and you start taking it daily, you will feel different. You will have all of the good symptoms and none of the bad. If you experience any of the bad, go back to your doctor and tell them. They will know what to do.
I am no PhD, but I can assure you that if you do as I say, you won't ever regret it.
Good luck buddy! I am always around if you need any help. :smile: