Some people can also get a grumbling appendix which is low-moderate level issues that come and go kind of like tonsillitis....this may be why it was suggested to see if it gets worse...believe me if your appendix is gonna go you will know about it in a big way....if you start to get a fever or the pain intensifies or you start vomiting etc get thyself to a ED straight away....it is also possible it may resolve itself overnightish.....my appendix had grumbly episodes for years before it finally needed to come out.....