My boyfriend and I were playing around and he got pre-cum on my chest. I wiped it off with a tissue, but I'm not sure if I got all of it. I then took a shower where I cleaned my chest with soap and water and then cleaned my vulva with soap and water. I cleaned inside and around the vaginal opening because I was panicked and didn't want any pre-cum to be washed from my chest to my vagina. Now I'm wondering if that was a bad idea because by cleaning vigorously inside the vaginal lips and around the opening I may have pushed pre-cum or sperm into the vagina? Is there any chance of me getting pregnant from this? I've heard that sperm is just a hitchhiker in pre-cum from a previous ejaculation. He had not previously ejaculated at all that day, however I have been reading studies that say that pre-cum can contain sperm without prior ejaculation. Please help me!