Help please

Im a teen and had sex several times last night. The first time we used a condom,the second we didnt but he pulled out, the third time we went raw but didnt clean his 🍆. Only thing we did was me giving a little blowjob. Im concerned the sperm from the second time we had sex got in me the third time....ive told my mom she said it’s unlikely to get pregnant but im still very concerned, please give opinions or facts...