When should I be worried?

22 years, fresh college graduate here, standard secondary education program, At what point in the summer should I be worried about not finding a job in time for the school year? Me and my peers have been applying like crazy and all of us haven’t heard a single thing back and most of us have been applying since March/April. I know it depends on subject area/grade level, but just wondering if and when I should start looking at other certifications like sped and elementary. Thanks!