4 and 5dpo temp has dropped

Lauren

This is my second month temping. After ovulation my temps were looking good then suddenly yesterday and today (4 and 5 dpo) they are now dropped way back down. I am so confused as to what is going on. Also, even after the three higher temps post ovulation, Glow didn’t add a cover line and neither did fertility friend. Does anyone have any ideas?? I got a positive OPK and felt the ovulation symptoms, I surely ovulated. I am worried maybe my body isn’t making enough progesterone?