you should be concerned , things have tightened up a lot since the attacks in Madrid . so check and double check . Your Embassy will probably have a suggestion .
Fine are been give out by airlines to over stays in spain and across Eu via immigration officials , this can be marked in you passport , this could come against you when travel again .
fine have not started yet ,but it been draw up my the Airlines ..... how it going two be put in to action ..... and what date its going to start will be some time