using continuous birth control to stop periods.

Hi,
Welcome to ehealthforum,
Avoid self medication to try stopping the bleeding. The prolonged duration of vaginal bleeding/periods that you describe is not normal. If you have been sexually active, and if the bleeding is light, it could suggest possibility of pregnancy. If you have been sexually active, and if it is heavy and associated with abdominal cramps, backpain, presence of clots etc, then it could also be suggestive of possible ongoing miscarriage. Other possibilities include hormonal imbalances, thyroid abnormalities, endometrial problems/hyperplasia, uterine polyps/fibroid etc. If the bleeding is not getting controlled, you should consider visiting your treating doctor/gynecologist at the earliest for further evaluation to look for the underlying cause for the abnormal vaginal bleeding that you describe. Further treatment as appropriate (based on examination and investigations results) would be started to help you control the bleeding and regulate your periods. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet.
Take care.