Only bed the day of +opk , pregnancy ??

Jay

This month I could only bed once, it happened to be the day I got my +opk,

Which wasn’t planned, my partner happened to get that day home , out of the time he was working away,

Is there a good chance of pregnancy?

Or not that much, since we only had one day, would there be enough sperm left there to get my egg???

Has this happened to anyone and they’ve conceived having sex only on this day,

Would love any comments , xx

Thanks