I'm facing problem of irregular periods since menarche . But this time it had been 3 months. I am under no medication. No stress. Today in feeling so ill my lower back is paining ... I'm feeling nausea and stomach pain . So many times I had felt the symptoms of periods but still there were none. 7 months back I also had spotting issue and my pms were worst . I had taken hormonal tests and they were fine (taken 7 months ago) . Also there had been nothing physical.