Hormonology uses hundreds of scientific studies to show you how your hormones impact you in virtually every way every day of your monthly cycle. The Hormone Horoscope is a nifty little way of dispensing this information daily. To get started, find the week you’re on in your monthly cycle (you can use this easy guide if you’re not sure), then read your Hormone Horoscope for today!

My HormonologyWhich week are you on in your monthly cycle? Find out what it reveals about what your day has in store:

Week 1
Day 1 (first day of period) to Day 7
Estrogen rises
This weekend’s Hormone Horoscope: By the time the second half of your Week 1 rolls around, you may be exasperating friends who can’t understand why you suddenly love your partner / job / car / home / neighbor / frenemy today when during your premenstrual Week 4 and the first few days of Week 1 you were making plans to ditch them. The reason for your waffling? Rising estrogen is pumping up your optimism and euphoria, making you overlook the very faults that had you recently complaining.

Week 2
Day 8 to Day 14 or ovulation (here’s how to tell when you’re ovulating)
Estrogen and testosterone rise till they peak
This weekend’s Hormone Horoscope: Guard your heart today. You may be convinced that you’re head-over-heels in love with a first date, an old flame or someone who is not your current partner, resulting in you stalking them on Facebook, riding past their house like a million times and spending hours picturing your future life together. Truth? High estrogen may just be playing mind-games with you and the love you feel may not be as real as you think. That’s because as this hormone peaks it puts your brain on automatic mate-seeker, pushing you toward someone newer, more exciting and physically attractive. Luckily, there’s a super-easy way to find out if what you’re feeling really is true love or just estrogen lust before you make any drastic moves: Simply double-check how you feel about this person in Week 3 of your cycle. If it’s true love, the feelings you have will be just as strong even as estrogen plunges next week. If it’s simple hormone-fueled lust, chances are, your feelings will fade dramatically.

Week 3
Day 15 (or the day after ovulation) to Day 22
Progesterone rises; estrogen and testosterone drop for half the week, then estrogen rises again
This weekend’s Hormone Horoscope: It will be more difficult to resist high-calorie foods–like chips and dip, ice cream and any non-skinny flavored whatever-cino from your favorite coffee shop–due to rising progesterone, which amps up hunger and cravings. And this pull to pig out will be even greater when you see or smell tempting treats since research shows you’re more susceptible to cues like these that trigger food cravings during this phase of your cycle.

Week 4
Day 23 to the end of cycle
Estrogen and progesterone plunge
This weekend’s Hormone Horoscope: You may feel frustrated today as problems you’ve swept under the rug during the first three weeks of your cycle rear their ugly heads like nobody’s business. You can either blame or thank plunging estrogen for highlighting your woes. As this hormone plunges, it reduces feel-good serotonin in your brain. And while this makes you more agitated about problems, thing is, it’s probably about time you addressed them, anyway. After all, if you stayed mum all cycle long and never tackled issues head-on, then your roommate would never be told to finally pay her rent on time, your sweetheart would never find out you’re not really a fan of “Magic Meatloaf Mondays” and your co-worker would never learn that you actually don’t enjoy doing his work for him.

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