Hi all! 
I have been watching these boards for a while and am currently TTC #1 Cycle 4.
I use the Clearblue Digital Monitor and got a peak/smiley face on November 20. Because an OPK can only tell you that you’re likely to ovulate in the next 24-36 hours, how do you work out how many DPO you are? Do you take it from the positive OPK, in which case I’m DPO7, or do you guess when you actually ovulate, in which case I’m DPO 5/6ish?
Any help would be great! I’ve searched a few threads but can’t find the answer.