My daughter has been having regular periods since over a year. Now 3 months ago she has a gap of more than a month in her periods. After having her periods again after a month now its again a gap of over 1.5 months and she has still not got her periods. She does not experience any discomfort during her periods and is an active child. Please tell me if it is normal to have such irregular periods at such age or its some matter of concern. Thanks