Hi, When My Husband And I Had Sex, At Some

Hi, when my husband and I had sex, at some point the condom slipped off inside me. He had to get it out, it was in quite far up. After he got it out we noticed there was a lot of ejaculate inside the condom, but i did feel some run out before we realized the condom was still in me. Could the condom have blocked any sperm from getting to my cervix? The first day of my last period was Sept. 5th. I'm pretty sure I'm ovulating and wondering what my chances of pregnancy are? Thanks :D