Secretly dont take my birth control

So im 15, i have no boyfriend or S*x life, i secretly dont take the birthcontrol my mom gets for free from the doctor. Like i just dont take it or trow it away and dont use it, what do i do? Is this okay? I always feel nauseous after taking birth control due to female hormones and i feel disgusted by taking them, i dont want to be more girly than i am.