The short answer: most abnormal vaginal bleeding has a non-cancer cause, so the real question is which signs need action, and how soon. Very heavy bleeding, feeling faint, or bleeding when you could be pregnant needs care the same day (see the list at the end of this page). Book a gynaecologist visit without delay for any bleeding after menopause (even once), bleeding after sex more than once, or bleeding together with pelvic pain or a bad-smelling discharge.
In Hindi this is often searched as bina period ke bleeding (बिना पीरियड के ब्लीडिंग). This page focuses on warning signs and when to act; for a full guide to every bleeding pattern, see the abnormal vaginal bleeding overview.
On this page
- What Counts as Abnormal?
- Common Causes by Age Group
- Intermenstrual and Post-Coital Bleeding
- Do Not Wait and See
What Counts as Abnormal?
Abnormal vaginal bleeding is any bleeding that does not fit your expected menstrual pattern — including bleeding that is heavier than usual, bleeding between periods, bleeding after intercourse, or any vaginal bleeding after menopause. It is one of the most common reasons women attend a gynaecology clinic and, importantly, one of the most important symptoms across the spectrum of gynaecological cancers.
The reassuring reality is that the majority of abnormal vaginal bleeding has a benign cause — fibroids, polyps, hormonal imbalance, infection, or a cervical ectropion (delicate cells on the surface of the cervix that bleed easily). But the minority that signals cancer is important enough that all abnormal bleeding deserves proper evaluation. Read more about fibroids and other causes of bleeding.
Common Causes by Age Group
Reproductive years (15–45): Hormonal imbalance (anovulatory cycles, in which no egg is released), endometrial or cervical polyps, fibroids, adenomyosis, endometriosis, sexually transmitted infections, thyroid dysfunction, or a pregnancy complication. If you are in your 30s or 40s, see abnormal bleeding in your 30s and 40s for the patterns common at that age.
Perimenopause (45–55): Irregular anovulatory cycles are common, but endometrial hyperplasia (an overgrown womb lining) and early endometrial cancer become increasingly important differential diagnoses as oestrogen levels fluctuate. Any bleeding heavier than expected needs investigation.
Postmenopause (55+): Any vaginal bleeding — even spotting — must be investigated. Endometrial cancer presents with postmenopausal bleeding in over 90% of cases. The earlier the investigation, the better the outcome. See bleeding after menopause for what the checks involve.
Intermenstrual and Post-Coital Bleeding
Bleeding between periods (intermenstrual bleeding) and bleeding after sex (post-coital bleeding) are particularly important symptoms for cervical pathology. Cervical cancer classically presents with post-coital bleeding — often the very first symptom. A pelvic examination and cervical smear, followed by colposcopy if indicated, should be performed for any woman with persistent post-coital bleeding. A single light spot after sex, for example with dryness, is often harmless, but bleeding after sex that happens more than once should be checked. Read about the common causes of bleeding after sex.
Do Not Wait and See
Abnormal vaginal bleeding is one symptom where waiting to “see if it settles” can have serious consequences. Endometrial cancer and cervical cancer are both highly curable when detected early. The first steps are usually an examination and an internal (transvaginal) ultrasound, which can often be arranged quickly as outpatient tests. A biopsy of the womb lining is added only when the scan, your age or the bleeding pattern call for it. Read what to expect from the tests for abnormal vaginal bleeding.
If you have experienced any of the following, please seek a specialist opinion promptly:
- Any vaginal bleeding after the menopause
- Bleeding after sex, more than once
- Heavy periods that are significantly worse than before
- Irregular bleeding with pelvic pain or pressure
- Bleeding with an offensive discharge
Go to a hospital the same day if the bleeding is so heavy that you soak through pads very quickly or pass large clots, if you feel dizzy, faint or breathless, or if you have bleeding with pain and could be pregnant.
Dr. Nishtha Tripathi Patel sees patients with abnormal vaginal bleeding at Sterling Hospitals, KD Hospital, and Welcare Speciality Hospital, Ahmedabad. Contact: +91 76988 00333.