Amazing skin? Bigger breasts? Fantastic flirting skills? Your period gives you all this and more! Read on...
Day 1: The best day to WEAR BIG KNICKERS

Your period is here and, although it's a hassle, you feel strangely chipper.
What's happening inside?: Your womb is pushing out the unfertilised egg and lining. Rising oestrogen means an end to those bad moods, but you'll probably still feel a bit minging.
What you can do: Hold a hot water bottle to your tummy to ease cramps, gentle exercise also helps.
And treat yourself to a bit of chocolate, the chemicals in it will lift your spirits.
Days 5 - 10: The best days to FEEL SUPER CONFIDENT

It's all over and you've got a three weeks of tampon-free joy before you. Your appetite's shrunk and you're feeling smugly svelte. You look ace and your confidence levels are soaring.
What's happening inside?: Your period imight be over, but your oestrogen levels are still rising giving you an extra happiness boost.
What you can do: Spend your tampon money on some slinky new accessories!
Day 11 - 14: The best days to DITCH THE FOUNDATION

Your skin is suspiciously radiant and you hardly need any make up.
What's happening inside?: Around day 11 your pituitary gland will release a hormone to make a follicle grow and an egg mature.
High oestrogen levels are reducing oiliness which is giving you supermodel skin. Bonza!
Day 15: The best day to BE LAZY

You feel knackered, you're less confident and you just want to flop around the house all day.
What's happening inside: Your oestrogen levels drop and an egg is released, beginning its three day trip to the womb.
What you can do: Take it easy but as always don't be lazy about contraception! You're now super fertile.
Day 16:The best day to FANCY DODGY MEN

You feel really attractive but you find yourself strangely drawn to George Clooney's manly jaw... Oh dear.
What's going on inside: You're ovulating so your body is on the lookout for anything 'manly.' Scientists also claim that your face gets better looking during your 'fertile' phase, so if muscle men do start throwing themselves at you, remember to duck.
Day 18: The best day to FEEL KIND OF BIOLOGICAL

You're feeling really attractive and your skin is tingle-tastic.
What's going on inside?: Basically, you're fertile and your body's survival instinct is trying to get you to have sex so you can get pregnant. Obviously, you're not going to let that happen!
Enjoy these new feelings you might be having, but don't let them go to your head. If you are having sex, always use contraception, and remember it's illegal before age 16, no matter how good it feels.
Day 22: The best day to WEAR JOGGING BOTTOMS

Uh oh, your PMT is back with a vengeance and you could put on up to 3-5lbs, you probably won't feel like wearing your strapless, skintight red dress right now.
What's happening inside?: Your oestrogen levels are really low which is why you feel grouchy. The good news is that any weight gain is probably just fluid retention, so don't panic.
Day 25: The WORST day to HAVE 'THE CHAT' WITH YOUR BOYFRIEND

You feel all delicate and emotional, and you just want a big hug.
What's happening inside?: Your hormones are going crazy and the changes going on inside are making you feel vulnerable.
What you can do: Don't be tricked into having 'the chat' with your boyf just 'cos your body is telling you to do it, you could end up scaring him silly. Wait till you're really feeling yourself before having any serious talks.
Day 28: The best day to EAT ALL THE PIES

You've got your fingers in lots of pies today, and cream cakes, and chocolates...
What's going on inside: Your metabolism is super fast and you can scoff up to 500 extra calories a day just before your period! A TOTAL bonus.
What you can do: Stock up on tampons or pads now, your next period is on its way.
Remember:
Period cycles vary in length, so this is just a rough guide to the changes going on inside your body.
Your period may not be completely regular yet. Don't worry, it'll settle down soon.
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