Birth control

I recently started working and kept forgetting to take my birth control pills. I decided to stop taking them since I had missed like 4 days. My period started right after. Once I was off my man & I had sex. I realized he finished in me and I freaked out because I totaly forgot I was off the pills. Well my question is, it's been around 11 days since I stopped taking birth control and is there a possobility of becoming pregnant in my situation?