Hi there. Well, first, unfortunately, all birth control does have a failure rate. So, you DO need to rule out pregnancy. But otherwise, it is perfectly normal to have a periodic late period or what is really a longer cycle. Stress, illness, changes in routine, gaining or losing weight and other things can cause this to happen. Take a test but don't worry too much hon. good luck and great that you use protection all the time!
I am starting my leaving cert tomorrow so maybe thats why my period is late but i am quite worried that i will get it in the middle my exams i dont know that to do
