I am thinking about starting BBT tracking if I get another BFN this cycle. I remember trying to do BBT tracking in my first pregnancy though and hating it because I wake up at least once a night to wee and I don't like having to worry about waking up the same time. Has anyone tried one of those BBT trackers like the Ava bracelet or the OvuCore. Are they worth the price to make BBT tracking simpler?