I agree with Lynda. I've had times where my house was warmer or colder than usual, and it honestly didn't affect my BBT. Maybe I'm just weird though.

I know you had a spike which might show you O'ing Monday, but the temp isn't as high as your pre-O temps even, so I'm not convinced you O'd. I hope I'm wrong, but just food-for-thought-- Clomid makes me have very intense O pains for days (5 or 6) and I've also read that if you O regularly on your own, Clomid might make you O a little later. Just another reason I'm not convinced you O'd. Like I said though, I hope I'm wrong and you get a huge spike tomorrow morning!

Sorry I'm not very much help!