Don't know what to make of this

Gemma • TTC #1. Seamstress. Happily Married with 6 fur babies.
Okay ladies, this is my first month charting my temp. Started it before my AF was due, missed temping two days during my window but DTD regardless. Now my temp is coming down gradually. Has anyone else had this and got a BFP or is this a sign the witch is on her way in 5 days? Any advice is appreciated xx