Had my length over x-mas and immediately chunky bleeding a week after 1/7. First month stale of BC. Whats going on?

-had period a week ago
-have chunky bleeding week later
-tired
-first month stale of birth control Your body needs to adjust to the scarcity of hormones or changes contained by hormone levels hence you might experience changes contained by your period. It usually take several month until your body adjusts itself posterior to normal.