What do we think?

Hey girls, my chart has just been a bit unusual this month, I've charted for 9 months now and this is the first time my temp has dropped before 13dpo, usually its consistently high then drops and bam period next day easy peasy but this cycle I had a drop at 11dpo then it went back up a bit 12dpo and now at 13dpo it's down a little but not to my cover line as it usually is!

I took an easy@home pg test yesterday and was negative so not gonna test till maybe tomorrow or Thurday, just curious if anyone has any words of advice. I know my cycle will likely start tomorrow/Thursday due to the temp drop but always looking for hope!