Pumping at Work

Up until last week, pumping at work has been going fairly well.  There are times when I am only able to pump once during the work day, but so far I haven't noticed a dip in my supply nor have I had to use my freezer stash.  I normally get to use one of our rooms that has a lock on it, other days I use empty patient rooms.  Never have I had a walk in....until Thursday.  One of my doctors walked in on me.  He didn't see much but was really embarrassed.  I knew it was only a matter of time.