DIDN'T HAVE SEX DURING ONLY POSITIVE OVULATION DAY 😭

anyone else ever not had sex during their fertile week and on the day the opk finally had a positive result? me and husband have been exhausted this week and our current child has been a handful so think she's put us off wanting sex but at the same time, even though we had sex today it's past the 36hrs from positive ovulation test so highly likely we've missed it this month and I feel like it's a total waste. This is only month 3 of trying but we didn't even try and I am feeling really down about it now... Sorry just needed to rant.