OPK question

Meghan • Pregnant with baby #4 & #5! Also proud surrogate mom to 2 baby boys! Mother of one boy named Everest Michael 💙

I know it’s negative but when do you usually start BD? When it gets around this dark or do you wait till you get your peak/high?

Sidenote: I’m a traditional surrogate so I do artificial insemination so that’s why we don’t do it whenever we want 🤣