I am on birth control and the past two months i have had very watery pink peorid for 2 days normally very heavy and lasts for 7 could i be pregnant?

Period changes: I'm wondering if these changes in your menstrual cycle to heavy for 7 days to a light pink, watery discharge for the past 2 months has occurred at the same time you started or changed birth control? If you have taken, or used, your birth control (not sure what type) as prescribed/directed, the chance of pregnancy is slim. However, a simple over-the-counter urine test will tell you! Good luck!