Cervical position and positive OPK

Had peak opk test yesterday so BD yesterday and today. I’ve been reading about cervical position because I’ve been TTC for 13 months and just trying everything out to get my BFP. this morning my cervical position felt high but closed. This afternoon it felt high and open. I have read that sperm can last for a few days to still get you pregnant- my question is, is that still the case if your cervix is closed? Do sperm still get through? I BD before my cervix felt open and now I feel like it was a waste. Anyone know?? Thanks💗