Kinda freaking out - thoughts?

My bf and I had sex late Saturday night 6/30- he ejaculated full force & my charts are showing ovulation day 07/01. I didn’t notice until today when I checked out my calendar. We aren’t trying but we aren’t using any type of protection either. What are the chances of me getting pregnant? Glow says 7%, chances are “medium”- but according to a lot of info online that is the prime time to get pregnant. I’ve always wanted children, never thought at this moment. Perhaps it’s a silly question but I’m just a little anxious about it. Any feedback would be appreciated. Thanks :)