Pregnant??

I’ve already posted this but I’m gonna post again Cz I’m freaking out. I’m a teen and I rlly don’t want a baby. I’m on the BC pill and I take it everyday at the same time, never missed it. My bf also pulls out way before he cums just for a little extra safety. For the past 4-5 days I’ve been getting cramps in my lower back and in my hips/ thighs and my periods not due for 6 days. I read on google that mild cramps is a pregnancy symptom so I’m going insane. It has happened but it’s not often I get pre pms symptoms. I’m rlly worried I wanna cry!! What do u guys think??