Could i be pregnant? Need reassurance

I know it’s very unlikely but I’m starting to freak out and need some opinions. I am on birth control and have been for four months, and taking it correctly. A few days ago I had protected sex with a condom on correctly and he even pulled out. However, I am now two days into my placebo pills (I only take three of them) and my period still hasn’t came. With birth control, a condom, and pull out is there a chance I could be pregnant??

I apologize to anyone who finds this question stupid but I am starting to get anxiety over the situation and need opinions.