My mother (aged 45) having menstrual problems, she had her periods on 16th April, 2020 to 23rd April, 2020, but her flow was very low. Usually, her periods ends within 3 days but this time, it showed up for 8 days; but only during midnight then the whole day there was nothing. This is the first time, she has experienced this problem. She had undergone a blood test last month, her haemoglobin was 11.