Which do I trust more, opk or temps & cm?

My temps don't match up with my opk and cm. The 24th I had a positive opk and ewcm. By the 26th opk was negative and cm was just creamy. Temps started normal. The 27th I had a large temp dip, and then 2 days of a large spike. If I am still high tomorrow, I will have ovulated the 27th according to temps.