Could I be pregnant?? ⁉️⁉️😱😰

I'm so scared and I'm having a panic attack Rn and I need closure. Around a month ago my "friend" tricked me into a threesome with her and her bf and he kinda raped me. He wore a condom but it could've slipped off. I have a bf and I could never ever tell him this. My last period was like a week ago and it only lasted like a few days and was super light most of the days and heavy one day. My period is usually late and I'm not due for a while I think. I'm on birth control pills (I take them on time every day) and I've never had sex without a condom. I'm just super scared and please don't be rude and please be honest what you think.