Hi, all; this period calendar is applicable only for those having regular periods; for irregular periods this is not advisable and no longer applicable. For regular periods, normally it's a cycle of 30 days; and yet 10 days before and after is not reliable. You can try 5 days and before and after to be safe; as ovulation starts from the 12th to 18th day. Hope this helps. Cheers.
Hi, all; this period calendar is applicable only for those having regular periods; for irregular periods this is not advisable and no longer applicable. For regular periods, normally it's a cycle of 30 days; and yet 10 days before and after is not reliable. You can try 5 days and before and after to be safe; as ovulation starts from the 12th to 18th day. Hope this helps. Cheers.