First Abnormal Period

Aliyah • - 22 years old - happily taken 08*18*15 - expecting twin boys 04*09*17
So This Is My First Adnormal Period , I Started Light Spotting On November 11th Which Turned Into My Cycle From The 12th To The 15th , My Cycle Was Heavier Then Normal. I Have Been Experiancing AfterPeriodic  Spotting From The 16th To The 18th. But Today (November 19th) My Spotting Went From Light To Medium Bleeding .....
Not Sure Whats Going On Here . 😰