This is the number of days in one menstrual cycle.

Start counting on the first day of your period and stop counting on the day before your next period. To calculate your period, you'll need to count the days in between your last few periods. In a 28-day cycle, ovulation typically occurs on day 14. This is the time when you’re ovulating and at the highest risk for pregnancy. See your doctor if you find yourself bleeding through six or seven regular tampons a day, or if you’re on your period for more than seven days. Bleeding usually amounts to somewhere between 10-80 grams, or 1 to 6 tablespoons of fluid (not that we’re measuring, but it’s good to know for keeping track of tampon changes).An average cycle is 28 days, but can range from 21 to 35 days (to work yours out use a period cycle tracker).Healthy periods generally last between four and seven days, with the heaviest days being the first and second.But why do we bleed in the first place? Since your egg wasn’t fertilised, your womb lining sheds and leaves your body. This is the start of your cycle and when bleeding begins. Resist the urge to have an extra cup of coffee.While these symptoms can be painful and uncomfortable, the good news is there are ways to help manage them: And just so you know: diet, caffeine and stress can increase the intensity of PMS symptoms. It’s common to experience PMS in the three days leading up to your period. In other words, that urge to sit on the couch in joggers with a tub of ice cream and cry over ‘The Notebook’. Some common symptoms of PMS are headaches, bloating, irritability and crying more than usual. All cycles are unique, but between pre-period, period and ovulation, there are a few things we all have in common:

What’s important is that you find out what’s normal for you a period tracker will help you to do just that. First of all, stop thinking about normal.

Period tracker calculator