I had the opposite happen. My temp plummeted today by .2 degrees from Sunday's temp, I disturbed yesterday's temp but it was down .5 from yesterday! When I first took it I was like "No way!!". So, I decided to confirm it. Went back to sleep for another hour and that one was even lower (used the first one on chart, the second was just to make sure it was actually low today). Not sure what to make of it. Normally when my temp takes a dive like that it is because I wake up REALLY early and take my temp because it is less than 3 hours before my normal temp time (and you are supposed to take it after a minimum of 3 consecutive hours of sleep) or I am surging and about to O. I haven't tested yet but it has me wondering if it is a drop before the rise... It is not uncommon for me to get a temp drop a day or two before ovulation. Plus, I posted on the main forum about this, after DH and I DTD (protected, not want to ruin our one attempt), there was a bit of EW in there. Practically nothing compared to my norm but it was definitely there! I'll post... or maybe just update this post after I test :) Just waiting to need to use the restroom.
ETA: OPK still - :(