Hello, I Started Taking Clindamycin For A Root Canal Two

Hello, I started taking clindamycin for a root canal two weeks ago, and usually my period is extremely heavy and lasts 7 days on a 24 day cycle, however it came about 5 days early and was extremely light for me, and had a lot of brownish color from the start, and lasted 4 days, could this be the antibiotic?