Ok so I just started taking Seasonique. I’ve had sex recently and I’ve been feeling like I’m going…

Ok so I just started taking Seasonique. I’ve had sex recently and I’ve been feeling like I’m going to get my period but I haven’t and I will be late. How has this pill worked for any of you ladies first starting out? I expected spotting and off periods but it’s suppose to stop your period? Idk. I think I might get a pregnancy test just to be safe.