Nausea or throwing up on your period: what to do
Some people feel nauseated around their period. Chemicals involved in period cramps can also affect the digestive system. That does not mean every sick feeling is caused by a period, especially if you are vomiting, have severe pain or cannot keep fluids down.
Still vomiting or unable to keep drinks down? Get medical help promptly. Blood in vomit, sudden severe belly pain or fainting needs urgent help now. Tell a trusted adult; do not wait for bleeding to stop.
What if I’m actually throwing up on my period?
Nausea means feeling sick; vomiting means you have thrown up. Some people experience both around a period, but bleeding does not prove why it is happening. An infection or another problem can happen at the same time.
Let a trusted adult or the school nurse know, and try small sips of a drink. If drinks will not stay down, vomiting keeps happening, or you are peeing much less, get medical help promptly. You do not need to keep trying food or finish class before asking.
A small plan for right now
Try regular small sips of a cool drink, fresh air if available, and smaller meals rather than a large one. Strong food smells may be harder to tolerate. You can pause what you’re doing and find somewhere comfortable to sit.
At school, tell a teacher or nurse that you feel sick and need help. Keep the request simple; the person helping you can ask for more details privately.
To a teacher or nurse
I feel sick and I’m worried I might throw up. Can I go to the nurse and get some help?
If it keeps happening around your period
Note whether the nausea starts before bleeding or after it begins, whether cramps happen too, and whether you have actually vomited. This helps a clinician understand the pattern. It does not prove a cause, and you do not need months of notes before asking for care.
If pain is the main problem, the school cramps guide has ways to request support. You should not have to miss meals or school every month without an assessment.
If you are not feeling sick but food simply does not appeal, the low-appetite guide covers that different situation.
Don’t wait on these symptoms
Peeing much less, dark urine or dizziness can be signs of dehydration. Tell the adult or clinician about these changes as well as how often you have vomited and whether drinks stay down.
If you use a tampon and develop sudden fever, vomiting, diarrhea, dizziness or a sunburn-like rash, get medical help immediately and tell an adult. These can be signs of a rare serious illness. Remove the tampon if you can, but do not delay help if it will not come out. Do not wait for every symptom.
If nausea repeatedly returns or does not improve, arrange an appointment. Tell the clinician about medicines you take and any other symptoms. Avoid adding a nausea medicine or supplement on your own; a pharmacist or clinician can advise what is appropriate for your age and situation.
Where this comes from
- Nemours KidsHealth: throwing up during a period — teen-facing vomiting guidance; cross-checked against current urgent-care advice
- NHS: diarrhea and vomiting — small sips, inability to keep fluids down and urgent warning signs
- FDA: tampon safety — sudden illness during tampon use and immediate medical help
- Cleveland Clinic: period flu — prostaglandins and digestive symptoms around periods
- NHS: feeling sick — small sips, meals and recurring nausea
- NIDDK: diarrhea symptoms and causes — other causes, dehydration and warning signs
Sources checked October 29, 2026. General education, not a diagnosis or personal medical advice. These organizations have not reviewed or endorsed this guide. Tell us about a correction.