Okay so, a few times now I've gotten that purpley-blue and white bad boy out, set it all up, and when I look in the window for any anomalies, my pen looks.. fizzy? I've been told a few big air bubbles up top is normal, but these have had three big bubbles up top and loads of tiny little ones suspended in the clear liquid. Has anyone else had this problem and asked their doctors what's a normal and acceptable amount of bubbly? I ended up not taking those pens and, though I do plan on asking my nurse (and showing photos), I want to avoid wasting them as much as possible until I can speak to someone. Any help is much appreciated!