Bloating: definition and meaning
Bloating is a feeling of fullness, tightness or swelling in the abdomen, sometimes with a visibly larger belly. It has many causes, including gas, constipation and fluid retention. Many people notice it most in the days before and the first days of their period, when changing progesterone and estrogen slow digestion and make the body hold on to water.
Why bloating follows your cycle
In the luteal phase, progesterone relaxes smooth muscle, including the gut, so digestion slows. Hormone shifts also make the body retain salt and water. Then, as your period starts, prostaglandins can speed the gut up again, which is why some people swing from bloated to loose stools.
- Usually starts 5 to 7 days before a period
- Often eases within the first two days of bleeding
- Can add 1 to 2 kg (2 to 4 lb) on the scale, which is water, not fat
What helps
- Cut back on salty and highly processed foods in the luteal week.
- Drink water regularly; dehydration can make retention worse.
- Keep moving: a walk helps the gut and eases cramps.
- Eat smaller meals and go easy on fizzy drinks.
- Increase fiber gradually if constipation is part of it.
More detail in bloating before your period and how to reduce period bloating.
See a doctor if bloating lasts most days for three weeks or more, or comes with feeling full quickly, pelvic pain, changes in bowel habits, unexplained weight loss or bleeding after menopause. Persistent bloating can occasionally be a sign of ovarian or bowel conditions that need checking.
Bloating and mood
Feeling puffy can hit body image and mood, right when PMS is already making you sensitive. Knowing it's water and temporary helps many people be kinder to themselves that week.
Frequently asked questions
How long does period bloating last?
Usually a few days before your period and the first day or two of bleeding.
Is bloating a sign of pregnancy?
It can be, because progesterone stays high in early pregnancy. On its own it can't tell you, since it is also a classic PMS symptom.
Sources
This page is for information only and isn鈥檛 medical advice. If something worries you, please talk to a doctor.
Keep reading
Period bloating: why it happens and how to ease itPeriod bloating explained: why your tummy swells before and during your period, how long it lasts, and simple, evidence-based ways to feel lighter.How to reduce period bloating: 10 things that helpHow to reduce period bloating: less salt, more water, movement, fiber, potassium-rich foods and the right pain relief. Quick fixes and prevention.
What is premenstrual syndrome (PMS)?PMS (premenstrual syndrome) is a group of physical and emotional symptoms in the days before a period that ease once it starts. Causes, symptoms and help.
Progesterone: definition and meaningProgesterone is the hormone made after ovulation that prepares the uterus for pregnancy. Its role in the luteal phase, PMS, mood, sleep and temperature.Why am I bloated before my period?Why am I bloated before my period? Hormone shifts make your body hold water and slow your gut. Why it happens, how long it lasts and when to check it.