Hope I at the right place I been googling and researching lots of info.

I am 21 years old and currently junior in college.
so, I started doing bad in test midterm. I am very calm guy and pay attention class very well take excellent notes and everything.
So very frustrated and i saw a college therapist she said I might have ADHD and so she recommand to see a doctor.

And so I saw a psychiatry this was actually problem for very long time I just did not bother seeing a doctor and taking drugs. because i was doing good last quater my gpa was 3.5 .so long story short he has prescribed me a 10mg twice a day Amphetamine

its been over week now and ya I am able to focus lot better and study. I just want to know if that medication he gave me is ok and going to work . I just want to know if anyone is taking this and how do you feel before and after
can get some perspective

Thanks!