It feels that I am counting down the minutes until a meeting, a class, or anything else with a fixed time, because I have an anxiety that my phone alarm will not go off. It used to do this with my old phone which is probably why I am conditioned like this, but often I get really involved in whatever I am doing and forget the passage of time around me. Has anyone else experienced this? 

I'm thinking of getting a second alarm, but I can't find any good one that allows easily setting multiple alarms (I have one for each class).