Adderall Side Effects Question

Hi, I'm new here, first post. I started taking Adderall with a prescription this past Friday, 1 15mg XR capsule in the morning. But anyway, the first time I took it (and today when I took 2 capsules at 7:30am) I got the well-known euphoric type feelings. That lasted for about a good hour.. but then later on in the day, for a long while, I experienced just an overall interest in whatever I was doing. Like an unusual spike in interest. In random things. For instance, today, I found a bunch of football cards in my closet (no clue where they came from, but thats besides the point), so I sorted them and went to beckett.com to check the prices on them to see if they were worth any moola.  Now, my old non-Adderall-taking self would have found this mildly interesting, mainly due to the fact that I like football a whole lot. But this... this was nuts. It was perhaps the most interesting, exhilerating thing I had ever experienced. I was so into it, concentrated, focused and pleasurable about doing it. I didn't feel like the euphoria I was talking about earlier though, so that brings about my question:

Is the experience with the cards I just wrote about part of the first few days of euphoria? Or is that what things are like sometimes when on Adderall? Oh, btw, I experienced the whole card-sorting field day at about 3:00pm in the afternoon. I took the two 15mg capsules at about 7:20am that morning. Alright, thats about it--replies would be greatly appreciated.