I think if I were you Topanga, I would trust the temperature spike and not the OPK. Generally speaking (from my research) the only true confirmation that you have ovulated is a temperature spike. I have no idea why you would still produce LH after ovulation but you say this is common for you. Perhaps it's like HCG and miscarriages. After a woman has a miscarriage it takes a while for the HCG to leave your system. Mayber your body makes so much LH that it just takes a while for it to get out of your system after ovulation. That's my theory and I'm sticking to it.
Can I just say- I would love to be pregnant. I'm sick of this "trying" stuff.