Hi, i took double of bc to stop heavy bleeding for a week. it stopped the bleeding but 3 days after i am back to one pill i am spotting. is it normal?

Yes: When ever you manipulate your hormones it can take a while for your body to get back on track. But if you have any severe cramping, fever, discharge, or heavy bleeding again, you should get seen.

It depends on: what normal is when you take extra birth control. You have just postponed things by taking the extra birth control. You still have endometrium that is sloughing so you would expect the spotting. You have two choices as I see it: one to continue spotting as you are and wait for things to normalize after your next period or two, stop your pack now have your period and then start a new pack.

Not unusual: Break thru bleeding is very common on oral contraceptives but it does tend to diminish with time. Taking a double dose of your BCP is often suggested but it hasn't been clinically studied and may expose you to increased risk of the side effects of BCP's. A safer alternative would be to take an estrogen supplement for 7 days to reduce the bleeding. Discuss this with your physician.