no one to talk to about this..

I had unprotected sex with my boyfriend on Wednesday. He told me he came inside of me a little bit. I'm not on birth control, my periods are irregular. I do want his baby. It might sound obvious, but is there a possibility that I'm pregnant? Or would it take a few more times if him actually going inside of me to actually be pregnant? Note: I'm ovulating. I am as we speak as well. 😷  I want a mini. ☹️ please help. Any advice would be so helpful.