Hi bonelige and welcome. Im very sorry for your loss. To answer your question about o'ing and bdind, we only
bd the day before ov and we got our BFP. You can look at my ff chart if you want to. I believe its recommended to db every second day from getting any fertility signs like ewcm, the day before and the day of ov. Someone correct me if im wrong.
I hope your stay here is only very short and a BFP is just around the corner for you.