See I usually have sex every other night anyway so every other night from CD8 is normal for me then when I get a +opk obviously Ill do it every night..
I just want something to actually STICK to rather than just going oh im doing this and that this month then like forgetting hahaha!
Have you thought about doing CP, Temp or CM charting? if an opk isnt picking up OV, orrrr actually going to your GP as the opks may not be picking it up for a reason love, always better to be safe than sorry!