Period in the middle of birth control pack.

Jess

I have recently just started birth control for the first time. I have finished one pack & am on week 3 of my second. I take my pill everyday at the exact same time, however I am having what I think is my period. I am bleeding too much for a panty liner. Is this normal? Should I contact my doctor? I have another week to go before I’m supposed to have my period with the placebo pills.