Hi,
Welcome to ehealthforum,
Bleeding pattern and duration abnormalities could be due to hormonal derangements, thyroid level problems, uterine fibroids, polyps, ovulation bleeding, breakthrough bleeding, pregnancy etc. Visit your gynecologist/obstetrician at the earliest for further evaluation and assistance. Treatment as appropriate would be started based on examination and investigation results to help you. Take adequate rest. Drink plenty of water. Maintain healthy diet. Be in regular follow-up and monitoring of your treating gynecologist/obstetrician.
Take care.