OPK mood killer!

Just venting about the frustration I'm finding while using OPKs! This is our second month using them. We've been charting for almost a year but also had a miscarriage. Since my loss I've been even more intent on becoming a mom but these OPKS are killing the vibe! Either I don't want to BD because I don't want to waste a round when I'm not ready or he just feels weird that I'm "charting my pee" or we're just not in the mood when we're supposed to be BD'ing and don't want it to be scheduled and forced. 
Does anyone have any advice for keeping it sexy and spontaneous when it's actually very scientific and calculated? 
Vent over, phew!