Am I over medicated?

I just went up to 25 mg in amphetamine salts. I tried doing my paper today and I kept opening new tabs and would switch from one paper to another and then I would go do another thing. It’s like my add is on overdrive, I keep getting lost in everything and unable to focus. 20 mg was what I would be taking before and I did feel “normal” I still felt like I was getting distracted and impulsive but it was manageable but because I felt like I couldn’t focus I wanted to try 25. Any of you experience over medication?