First of all I think you should try to figure out (with the help of a doctor) why you are so tired. It could very easily be due to something like anemia. If there is no medical explanation for your fatigue you might want to try a medication. However it's a really bad idea to medicate your fatigue not knowing what is causing it.
For EDS (excessive daytime sleepiness) Provigil/modafinil
would probably be the best medication to start with. It's quickly becoming the first line of treatment for narcolepsy.
Provigil/modafinil is really effective and people do not build a tolerance to it, unlike Adderall
and other stimulants
. Provigil/modanfil will be effective as long as you are taking it. You would develop a tolerance with Adderall that would make it less effective over time.
It would also be a lot less likely to aggravate your anxiety than Adderall.
Doctors don't just hand out Adderall prescriptions. I would be really amazed if you were able to get one. It's going to be much easier to get a prescription for Provigil/modafinil and it will probably be more helpful for your fatigue.