Ang prolonged bleeding kahit konti² lang can sometimes be related to stress at sleep deprivation, lalo na kung 3-4 hours lang talaga ang tulog mo every night, kaya yun ay definitely worth mentioning sa doctor para ma-rule out kung hindi lang side effect ng pills mo or something else. A few of us tried changing contraceptives din kasi similar situation, but honestly best na mag-check ka muna with your OB para sure, especially since nagtagal siya ng 8 days compared sa usual 4-5 days mo. Pero in the meantime, try to catch up sa sleep if you can na, kahit on weekends, kasi ang body mo ay nagmumuni-muni pa rin from pregnancy and breastfeeding (if you're still nursing), tapos may dagdag pang stress from the business, lakas loob mo talaga! Just get yourself checked lang para ma-ease ang mind mo.