Natural Hormones

Hormones affect every woman in different ways, and we all have them. We don't often directly feel the influence they have on our bodies, but sometimes we do – most notably during puberty when the sex hormones are produced in larger amounts. These hormones, including oestrogen and progesterone, enable and influence the menstrual cycle.

Hormones and The Menstrual Cycle

The menstrual cycle or period is a natural process and is roughly around 28 days. It is regulated by hormones in your body which rise and fall throughout your cycle. Here's a brief look at what these hormones do during your period.
UNDERSTANDING THE HORMONES IN YOUR BODY
UNDERSTANDING THE HORMONES IN YOUR BODY

Follicle-Stimulating Hormone (FSH) and Oestrogen

At the beginning of your cycle your brain produces a hormone called FSH which causes the ovary to produce an egg. This process also results in the production of another hormone, oestrogen, which thickens the lining of your womb so that it can support the egg in case of a pregnancy.

Luteinising Hormone (LH)

As the egg develops in the ovaries, oestrogen levels will continue to rise. When they are high enough, the brain produces the hormone LH 

which causes the egg to be released from your ovary. This is known as ovulation. When the egg is released it travels down your fallopian tube to get to your womb.

Progesterone

After ovulation, your body will produce another hormone called progesterone which works with oestrogen to prepare your womb in case an egg is fertilised. If the egg is not fertilised the levels of this hormone drop and this leads to the loss of the lining of your womb which has been building up. This is the first day of your period.

NEED ADVICE? SPEAK TO YOUR HEALTHCARE PROFESSIONAL

Speak to a healthcare professional for advice and support on your contraceptive needs.

doctor CTA
doctor CTA

SELECT COUNTRY AND LANGUAGE

Report possible side effects

If you want to report a side effect of medication, please contact your doctor, nurse or pharmacist. This includes any possible side effects not listed in your contraception package leaflet. You can also report side effects directly via the MHRA Yellow Card Scheme at https://yellowcard.mhra.gov.uk/ or search MHRA Yellow Card in Google Play or Apple App Store.
By reporting side effects you can help provide more information on the safety of medicines.