Super worried 😶

Right I'm on cerazette bc control and take it same time every day , max an hour out. And I also use the pull out methods however even tho I use both methods efficiently as I can I am still super worried I'm pregnant. I don't get periods due to bc so I don't have any reassurance every month that I'm not pregnant. 1) is there a possibility I am pregnant ?

2) how can I become less paranoid about being pregnant

3) what are the signs that you arnt pregnant

Any help would be much appreciated and set my mind at ease x