How many BD did it take?

Melody

I’m curious how ladies only BD once during peak fertility and got pregnant? I’m 9 dpo and starting to notice things i rarely have w/ pms but did notice w/ my other pregnancies. We only BD on my day of ovulation so I’m thinking it may be the tww over active imagination. I couldn’t test w/fmu this morning so I’ll test tomorrow but I’m curious how often 1x actually leads to pregnancy?