Help!! Blot clots while on active pill!!

So I'm on the birth control where you don't have your period for 3 months. I normally get spotting then it goes away. But this time I'm actually having my period when I'm on the active pill. And the clots that come out of me are pretty big. Should I call the doctor?? Or is this my body trying to tell me that this particular pill isn't for me??
(please note that I have taken it everyday at the same time)