Haha I know that feeling. Although, I think you are meant to take the day after your first positive as 1dpo. Since you O 8-36 hours after your surge. But again, I don't know a whole lot. I'm on day 8 of flashing smiles so I'm ready to throw my opks away. Especially since I had a surge a few days ago according to the Target brand. Honestly, you can start temping mid cycle imho. For me, pre-O is in the 97s and post-O is in the 98s.