My birth control makes me have no period, so how do know I'm not for sure pregnant?

So, here's my dilemma.

I am currently take Beyaz, which to my understanding can cause some women to have little to no bleeding when they're due for their period. I changed from Microgestin because of mood swings, etc while I was on it, but now I'm constantly worried about being pregnant. I am sexually active, so when I'm due for a period, I kind of want that reassurance that my birth control is working and my boyfriend of two years thinks I'm paranoid because I always want to run out and buy a test each month now.

I feel really silly, because most females love the idea of having no period. I just don't know if I should be taking a pregnancy test or taking my next set of pills. I considered talking to my doctor and seeing if I should switch to something else, but I love Beyaz other than this issue. I don't feel moody, and I don't have any other problems. Anyone have any advice?