What are the chances?

Help! (We are not TTC but are okay if it happens) my husband and I did the deed last night and he was too late to pull out. My calendar says i ovulated on the 1st and i did have EWCM that day but i also had ovulation pain yesterday. What "ovulation day" should i count the 1st or the cramps? And what are the chances of fertilization in either case? Already a momma to a 15 month old beauty 💜 thanks