you can definitely get PG w/less BDs
for DS2 we only BDed 3 times in the fertile window
https://www.fertilityfriend.com/home/3c56d/?i=253588&
and then for DD only twice(I count it as once because the first BD was so close to after-AF I doubt the 'swimmers' could've survived that long?)
https://www.fertilityfriend.com/home/3c56d/?i=1812848&
Those were a lot different than how we conceived DS1, I don't have an online chart just an old printout and we BDed 11+ times in the fert window.
lolz We were just married but still it makes me laugh for some reason.
The UTI's weren't funny tho. Ok, maybe they are kinda funny too, looking back at it all.
For this current pregnancy, we BDed only 4 times (one morning was 2x same day) so there are only three ticks on the chart.
https://www.fertilityfriend.com/home/3c56d/?i=5204055&
so uh, yes, it can be done. After I TTC-zilla'd out on conceiving our oldest, I've really had to go with a NTNP approach, at least outwardly where my husband is involved. In my head I don't think I've ever quite let go of that mindset. I married a bit older and got really caught up in the articles and and frightened by stats etc. I wish I'd started out more calm, & ..sharing a lot less of nitty-gritty & obsessive TTC details with him,
...basically made it more romantic and natural. Oh well, live & learn, I guess.