I have recently missed 4 BCP in a row. I took my pill for the remaining 4 days after. I got my period 2 days earlier than expected, lasted for 9 days(was very light) and normally my period lasts for 6 days and is heavy. Period went away, I stopped taking my BCP as were are trying for a baby. A week after my 9 day unusual period, I have bleeding again? Is this because I stopped my pill or is there a chance I am pregnant?
Thanks for your help :)

It's most likely because you stopped your pill intake. Bleeding more often would not be a sign of pregnancy. It may take several months for your cycles to regulate once more.