Sex on peak

Ruthie

I have been researching and wanted to ask, if you have sex on peak days of OPKs is it still possible to not get pregnant? Should we be having sex a couple days before hand also to increase our chances? We both have crappy scheduleds at this time. We are currently trying for baby 2 but I have PCOS and 37 years old so need all the help I can get 🤦🏾‍♀️