| If you've taken 6 pregnancy tests and they all came back negative, it's unlikely that you're pregnant. Most menstrual cycle intervals occur about every four weeks, with the normal range between 24 and 35 days. To measure your menstrual cycle, start counting from the first day of your last period and stop counting on the first day of your next period. Don't worry if you have one or two irregular cycles, sometimes all women have variations. If the irregularity persists speak to your doctor about it. |