Re: Help is there something wrong with me!?
First, stop taking stuff to keep you awake or help you study. Adderall is an amphetamine based medication used for Attention Deficit Hyperactivity Disorder.
Unless you have ADHD and have been prescribed this my your healthcare professional, then don't use it.
I would say what you need is less stress and more rest. The mere fact you are freaking out over this at the moment will make you panic, push adrenaline into your heart more and make your heart beat faster, maybe irregular, and you will tire fast.
"I CAN'T REALLY CONCENTRATE DUE TO MY CONSTANT ANXIETY RIGHT NOW." well that's you issue in a nutshell. cut the drugs and relax, and all will be fine.
Of course if symptoms persist, see your doctor. But if you do what I said above, I highly doubt they will. Might take another day of so once you start to relax.