So you stumbled. We all do! Pick yourself up and keep on marchin'. You know what to watch out for the next time you're feeling anxious.
As far as what to do when she comes back,
#1:KEEP YOURSELF BUSY this weekend. Consciously toss out (replace) any thoughts regarding her activities and fight hard to have yourself in a good place when she returns.
#2:You know her. If everything was as it should be, i.e. both of you fully contributing to a happy, loving marriage, how would she want to be treated? Think hard on this one. What would be fundamentally different about YOU in that picture?