Unprotected sex

Hi. Im aware about my cycle. I have 6 month old baby. Nag karoon na ako pero nadelay ng 2 months (no sex pa) then nag karoon ulit ako netong oct. Had sex and nag cum inside bat marunong ako mag labas. Sabi kasi kapag nag ka baby na madali na mabuntis. High chance kaya mabuntis? Wala akong pills hahahaha or any contraceptive. May recommendation kayo?